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F. Ann Walker - Publications

A. Ph.D. Research

1. "Thermodynamics of Coordination to an Unsolvated Position in Vanadyl Acetylacetonate," Carlin, R. L.; Walker, F. A. J. Am. Chem. Soc. 1965, 87, 2128-2132.

2. "ESR Studies of Coordination to the Sixth Position of Vanadyl Acetylacetonate," Walker, F. A.; Carlin, R. L.; Rieger, P. H. J. Chem. Phys. 1966, 45, 4181-4189.

B. Research Done at Ithaca College

3. "An ESR Study of Coordination to the Fifth and Sixth Position of a, b, g, d-Tetra-(p-methoxyphenyl)porphinatocobalt(II)," Walker, F. A. J. Am. Chem. Soc. 1970, 92, 4235-4244.

4. "An NMR Investigation of the Atropisomers of a, b, g, d-Tetra-(o-tolyl)porphinatonickel(II)," Walker, F. A.; Avery, G. L. Tetrahedron Letters 1971, 4949-4952.

C. From Research Done at San Francisco State University

5. "On the Observation of Cis and Trans Bis-(2-2’-Bipyridyl) Copper(II) by Electron Spin Resonance," Walker, F. A.; Sigel, H. Inorg. Chem. 1972, 10, 1162-1164.

6. "Spectral Properties of Mixed-Ligand Copper(II) Complexes and Their Corresponding Binary Parent Complexes," Walker, F. A.; Sigel, H.; McCormick, D. B. Inorg. Chem. 1972, 11, 2756-2763.

7. "Dynamics of Axial Ligation in Metalloporphyrins. I. Imidazole Exchange in Low-Spin Ferric Porphyrins," La Mar, G. N.; Walker, F. A. J. Am. Chem. Soc. 1972, 94, 8607-8608.

8. "Nuclear Magnetic Resonance Studies of Ferric Porphyrins," Walker, F. A.; La Mar, G. N. Ann. N. Y. Acad. Sci. 1973, 206, 328-348.

9. "PMR Investigations of Antiferromagnetic Oxo-bridged Ferric Dimers and Related High-Spin Monomeric Ferric Complexes," La Mar, G. N.; Eaton, G. R.; Holm, R. H.; Walker, F. A. J. Am. Chem. Soc. 1973, 95, 63-75.

10. "Steric and Electronic Effects in the Coordination of Amines to a Cobalt(II) Porphyrin," Walker, F. A. J. Am. Chem. Soc. 1973, 95, 1150-1153.

11. "Reactions of Monomeric Cobalt-Oxygen Complexes. I. Thermodynamics of Reaction of Molecular Oxygen with 5- and 6-Coordinate Amine Complexes of a Cobalt(II) Porphyrin," Walker, F. A. J. Am. Chem. Soc. 1973, 95, 1154-1159, 7928.

12. "Proton NMR and ESR Investigations of the Electronic Structure and Magnetic Properties of Synthetic Low-Spin Ferric Porphyrins," La Mar, G. N.; Walker, F. A. J. Am. Chem. Soc. 1973, 95, 1782-1790.

13. "Proton NMR and ESR Investigation of Axial Solvation in Planar, Low-Spin Cobalt(II) Porphyrin Complexes," La Mar, G. N.; Walker, F. A. J. Am. Chem. Soc. 1973, 95, 1790-1796.

14. "Proton NMR Linewidths and Spin Relaxation in Paramagnetic Metalloporphyrins of Cr(III), Mn(III) and Fe(III)," La Mar, G. N.; Walker, F. A. J. Am. Chem. Soc. 1973, 95, 6950-6956.

15. "A Linear Free Energy Relationship Between Substituted Pyridine Lone Pair Vertical Ionization Potentials and pKa," Ramsey, B. G.; Walker, F. A. J. Am. Chem. Soc. 1974, 96, 3314-3316.

16. "ESR Studies of Co(II) Tetraphenylporphyrins and Their Oxygen Adducts: Complex Formation with Aromatic Molecules and Sterically Hindered Lewis Bases," Walker, F. A. J. Magn. Resonan. 1974, 15, 301-318.

17. "Proton NMR Studies of High-Spin Manganese(III) Complexes with Synthetic Porphyrins," La Mar, G. N.; Walker, F. A. J. Am. Chem. Soc. 1975, 97, 5103-5107.

18. "Electronic Effects in Transition Metal Porphyrins. 1. The Reaction of Piperidine with a Series of para-Substituted Nickel(II) and Vanadium(IV) Tetraphenylporphyrins," Walker, F. A.; Hui, E.; Walker, J. M. J. Am. Chem. Soc. 1975, 97, 2390-2397.

19. "Electronic Effects in Transition Metal Porphyrins. 2. The Sensitivity of Redox and Thermodynamic Properties in p-Substituted Tetraphenylporphyrin Complexes of Cobalt(II)," Walker, F. A.; Beroiz, D.; Kadish, K. M. J. Am. Chem. Soc. 1976, 98, 3484-3489.

20. "Kinetic Deuterium Isotope Effects in the Reactions of 4-Nitrophenylnitromethane with Various Nitrogen Bases in Anisole," Caldin, E. F.; Parbhoo, D. M.; Walker, F. A.; Wilson, C. J. J. Chem. Soc. Faraday Transactions I 1976, 72, 1856-1860.

21. "Electronic Effects in Transition Metal Porphyrins. 3. The Reaction of Imidazoles and Pyridines with a Series of p-Substituted Tetraphenylporphyrin Complexes of Iron(III) Chloride," Walker, F. A.; Lo, M. W.; Ree, M. T. J. Am. Chem. Soc. 1976, 98, 5552-5560.

22. "Models of the Cytochromes b. 1. The Effect of Substituents, Axial Ligand Plane Orientation, and Possible Axial Ligand Bond Strain on the Pyrrole Proton Contact Shifts of a Series of Low-Spin Mono-Substituted Tetraphenylporphinatoiron(III)-Bis-Imidazole Complexes," Walker, F. A. J. Am. Chem. Soc. 1980, 102, 3254-3256.

23. "Entropy, Enthalpy, and Side Arm Porphyrins. 1. Thermodynamics of Axial Ligand Competition between 3-Picoline and a Series of Pyridyl Ligands Covalently Attached to Zinc Tetraphenylporphyrin," Walker, F. A.; Benson, M. J. Am. Chem. Soc. 1980, 102, 5530-5538.

24. "Entropy, Enthalpy, and Side Arm Porphyrins. 2. The Crystal and Molecular Structure of a Five-Coordinate Zinc Porphyrin with a 4-Atom Side Chain Attaching the Pyridyl Ligand to the Tetraphenylporphyrin," Bobrik, M. A.; Walker, F. A. Inorg. Chem. 1980, 19, 3383-3390.

25. "Electronic Effects in Transition Metal Porphyrins. 4. The Effect of Unsymmetrical Phenyl Substitution on the NMR Spectra of a Series of Metal-Free and Zinc Tetraphenylporphyrins," Walker, F. A.; Balke, V. L.; McDermott, G. A. Inorg. Chem. 1982, 21, 3342-3348.

26. "Models of the Cytochromes b. 2. The Effect of Unsymmetrical Phenyl Substitution on the Pyrrole Proton Shifts of a Series of Low Spin Tetraphenylporphinatoiron(III)-Bis-N-Methylimidazole Complexes," Walker, F. A.; Balke, V. L.; McDermott, G. A. J. Am. Chem. Soc. 1982, 104, 1569-1574.

27. "Models of the Cytochromes b. 3. Prediction of the Orientation of the In-Plane Heme Symmetry Axis in Unsymmetrically Substituted Low-Spin Hemes from the Temperature Dependence of their Proton Isotropic Shifts," Walker, F. A.; Benson, M. J. Phys. Chem. 1982, 86, 3495-3499.

28. "Models of the Cytochromes b. The Effect of Unsymmetrically Placed Phenyl Substituents on the Redox Potentials of a Series of Iron Tetraphenylporphyrins and their Bis-N-Methylimidazole Complexes," Walker, F. A.; Barry, J. A.; Balke, V. L.; McDermott, G. A.; Wu, M. Z.; Linde, P. F. Adv. Chem. Ser. 1982, 201, 377-416.

29. "Models of the Cytochromes b. 4. The Effect of Axial Ligand Plane Orientation on the Proton NMR Spectra of Symmetrically-Substituted Low-Spin Iron(III) Porphyrins," Walker, F. A.; Buehler, J.; West, J. T.; Hinds, J. L. J. Am. Chem. Soc. 1983, 105, 6923-6929.

30. "A Spectroscopic Study of 1:1 Copper(II) Complexes with Schiff Base Ligands Derived from Salicylaldehyde and Histidine and its Analogs," Wagner, M. R.; Walker, F. A. Inorg. Chem. 1983, 22, 3021-3028.

31. "Models for Compounds I of Peroxidases: Axial Ligand Effects," Fujita, I.; Hanson, L. K.; Walker, F. A.; Fajer, J. J. Am. Chem. Soc. 1983, 105, 3296-3300.

32. "Electronic Effects in Transition Metal Porphyrins. 5. Axial Ligand Formation Constants and Spectroscopic Trends of a Series of Symmetrical and Unsymmetrical Derivatives of Tetraphenylporphinatozinc(II)," McDermott, G. A.; Walker, F. A. Inorg. Chim. Acta 1984, 91, 95-102.

33. "Models of the Cytochromes b. 5. EPR Studies of Low-Spin Fe(III) Porphyrins," Walker, F. A.; Reis, D.; Balke, V. L. J. Am. Chem. Soc. 1984, 106, 6888-6898.

34. "Electronic Effects in Transition Metal Porphyrins. 6. The Effect of Unsymmetrical Phenyl Substitution on the Formation Constants of a Series of Tetraphenylporphinatoiron(III) -Bis-N-Methylimidazole Complexes," Balke, V. L.; Walker, F. A.; West, J. T. J. Am. Chem. Soc. 1985, 107, 1226-1233.

35. "EPR Evidence for H-Bond Donation to the Terminal Oxygen of Co-O2 Model Compounds and Oxy-Cobalt-Myoglobin," Walker, F. A.; Bowen, J. H. J. Am. Chem. Soc. 1985, 107, 7632-7635.

36. "The Effect of Hydrogen-Bonding of Amides on the Stability of Axial Ligand Complexes of Metalloporphyrins," Walker, F. A.; Balke, V. L.; West, J. T. Frontiers in Bioinorganic Chemistry, A.V. Xavier, ed., VCH, Weinheim (1985), pp. 183-193.

37. "Models of the Cytochromes b. 6. The Effect of Axial Ligand Plane Orientation on the EPR and Mössbauer Spectra of Low-Spin Ferrihemes," Walker, F. A.; Huynh, B. H.; Scheidt, W. R.; Osvath, S. R. J. Am. Chem. Soc. 1986, 108, 5288-5297.

38. "Synthesis, Spectroscopic and Structural Studies of Extremely Short Chain Basket Handle Porphyrins and Their Zinc(II) Complexes," Simonis, U.; Walker, F. A.; Lee, P. L.; Hanquet, B. J.; Meyerhoff, D. J.; Scheidt, W. R. J. Am. Chem. Soc. 1987, 109, 2659-2668.

39. "The Effect of Heme Orientation on the Reduction Potential of Cytochrome b5," Walker, F. A.; Emrick, D.; Rivera, J. E.; Hanquet, B. J.; Buttlaire, D. H. J. Am. Chem. Soc. 1988, 110, 6234-6240.

40. "Models of the Cytochromes b. 7. Novel Features in the Proton NMR Spectra of Mono-Ortho-Substituted Dialkylamidotetraphenylporphinatoiron(III) Complexes," Zhang, H.; Simonis, U.; Walker, F. A. J. Am. Chem. Soc. 1990, 112, 6124-6126.

41. "Influence of Heme Vinyl- and Carboxylate-Protein Contacts on the Structure and Redox Properties of Bovine Cytochrome b5," Lee, K.-B.; Jun, E.; La Mar, G. N.; Rezzano, I. N.; Pandey, R. K.; Smith, K. M.; Walker, F. A.; Buttlaire, D. H. J. Am. Chem. Soc. 1991, 113, 3576-3583.

42. "Separation and Determination of Diesel Contaminants in Various Fish Products by Capillary Gas Chromatography," Newton, J. M.; Rothman, B. S.; Walker, F. A. J. Assoc. Off. Anal. Chem. 1991, 74, 986-990.

43. "1H NMR Study of the Solution Molecular and Electronic Structure of E. coli Ferricytochrome b562: Evidence for S = 1/2 ¨ S = 5/2 Spin Equilibrium for Intact His/Met Ligation," Wu, J.-Z.; La Mar, G. N.; Yu, L. P.; Lee, K.-B.; Walker, F. A.; Chiu, M.; Sligar, S. G. Biochemistry 1991, 30, 2156-2165.

44. "Reactions of Bis(nitro)(a, b, g, d -tetrakis-(o-pivalamidophenyl)porphinato)ferrate(III) with Pyridine and Imidazole. EPR and Mössbauer Spectra and Molecular Structure of the Mixed Ligand Species," Nasri, H.; Wang, Y.; Huynh, B. H.; Walker, F. A.; Scheidt, W. R. Inorg. Chem. 1991, 30, 1483-1489.

45. "Models of the Cytochromes b. Attempts to Control Axial Ligand Orientation with a "Hindered" Porphyrin System," Hatano, K.; Safo, M. K.; Walker, F. A.; Scheidt, W. R. Inorg. Chem. 1991, 30, 1643-1650.

46. "Models of the Cytochromes b. 9. The Effect of Ortho Substituent Size and Type on the Binding and Restriction of Rotation of Axial Ligands in Tetraphenylporphinatoiron(III) and -zinc(II) Complexes," Walker, F. A.; Simonis, U.; Zhang, H.; Walker, J. M.; Ruscitti, T. M.; Kipp, C.; Amputch, M. A.; Castillo, B. V.; Cody, S. H.; Wilson, D. L.; Graul, R. E.; Yong, G. J.; Tobin, K.; West, J. T.; Barichievich, B. A. New J. Chem. 1992, 16, 609-620.

D. From Research Done at The University of Arizona

47. "Models of the Cytochromes b. Control of Axial Ligand Orientation with a "Hindered" Porphyrin System," Safo, M. K.; Gupta, G. P.; Walker, F. A.; Scheidt, W. R. J. Am. Chem. Soc. 1991, 113, 5497-5510.

48. "Models of the Cytochromes b. 8. Two-Dimensional Nuclear Overhauser and Exchange Spectroscopy Studies of Paramagnetic "Cavity" Type Tetraphenylporphinatoiron(III) Complexes of Planar Ligands," Walker, F. A.; Simonis, U. J. Am. Chem. Soc. 1991, 113, 8652-8657; 1992, 114, 1929.

49. "Models of the Cytochromes b. 10. Application of 1H COSY to Delineate the Spin Density Distribution at the b-Pyrrole Positions of Unsymmetrically Substituted Low-Spin Fe(III) Tetraphenylporphyrins," Lin, Q.; Simonis, U.; Tipton, A. R.; Norvell, C. J.; Walker, F. A. Inorg. Chem. 1992, 31, 4216-4217.

50. "ROESY: A Technique for Establishing the Existence of Chemical Exchange in Paramagnetic Model Hemes with Short T1 and T2 Relaxation Times," Simonis, U.; Dallas, J. L.; Walker, F. A. Inorg. Chem. 1992, 31, 5349-5350.

51. "Rapid Detection of 57Fe NMR Chemical Shifts of Model Hemes: An Approximate Correlation Between 57Fe and 31P Chemical Shifts of Fe(II) Porphyrins Bound to Phosphine Axial Ligands," Mink, L. M.; Christensen, K. A.; Walker, F. A. J. Am. Chem. Soc. 1992, 114, 6930-6931.

52. "Models of the Cytochromes b. Low-Spin Bis-Ligated (Porphinato)Iron(III) Complexes with 'Unusual' Molecular Structures, NMR, EPR, and Mössbauer Spectra," Safo, M. K.; Gupta, G. P.; Watson, C. T.; Simonis, U.; Walker, F. A.; Scheidt, W. R. J. Am. Chem. Soc. 1992, 114, 7066-7075.

53. "Gene Synthesis, Bacterial Expression and 1H NMR Spectroscopic Studies of the Rat Outer Mitochondrial Membrane Cytochrome b5," Rivera, M. Barillas-Mury, C.; Christensen, K. A.; Little, J. W.; Wells, M. A.; Walker, F. A. Biochemistry 1992, 31, 12233-12240.

54. "Laser Flash Photolysis Studies of Electron Transfer in the Cytochrome b5 - Cytochrome c Complex," Meyer, T. E.; Rivera, M.; Walker, F. A.; Mauk, M. R.; Mauk, A. G.; Cusanovich, M. A.; Tollin, G. Biochemistry 1993, 32, 622-627.

55. "Reversible Binding of Nitric Oxide by a Salivary Nitrosylheme Protein from the Blood Sucking Insect, Rhodnius prolixus," Ribeiro, J. M. C.; Hazzard, J. M. H.; Nussenzveig, R.; Champagne, D.; Walker, F. A. Science 1993, 260, 539-541.

56. "Electronic Effects in Transition Metal Porphyrins. 7. Synthesis and Spectroscopic Studies of a Series of Octasubstituted Porphyrin Isomers and Their Iron(III) Complexes," Isaac, M. F.; Lin, Q.; Simonis, U.; Suffian, D. J.; Wilson, D. L.; Walker, F. A. Inorg. Chem. 1993, 32, 4030-4041.

57. "Two-Dimensional 1H NMR Spectroscopy of Paramagnetic Heme Models of the Cytochromes: Successes, Failures and Unanswered Questions," Simonis, U.; Lin, Q.; Tan, H.; Barber, R. A.; Walker, F. A. Magn. Reson. Chem. 1993, 31, S133-S144.

58. "Cation Promoted Cyclic Voltammetry of Recombinant Rat Outer Mitochondrial Membrane Cytochrome b5 at a Gold Electrode Modified with ß-Mercaptopropionic Acid," Rivera, M.; Wells, M. A.; Walker, F. A. Biochemistry 1994, 33, 2161-2170.

59. "Hydration and Localization of Diacylglycerol in the Insect Lipoprotein, Lipophorin. A 13C NMR Study," Soulages, J. L.; Rivera, M.; Walker, F. A.; Wells, M. A. Biochemistry 1994, 33, 3245-3251.

60. "Substituent Effects on the Choice of the Orbital Preferred for Electron Spin Delocalization in Two Paramagnetic Low-Spin Iron(III) Porphyrins: Mapping the Spin Density Distribution at the Pyrrole Positions by 1H COSY and NOESY Techniques," Tan, H.; Simonis, U.; Shokhirev, N. V.; Walker, F. A. J. Am. Chem. Soc. 1994, 116, 5784-5790.

61. "Metalloporphyrin p-Cation Radicals. Molecular Structure and Intramolecular Spin Coupling in a Vanadyl Octaethylporphyrinate Derivative. An Unexpected Spin Coupling Path," Schulz, C. E.; Song, H.; Lee, Y. J.; Mondal, J. U.; Mohanrao, K.; Reed, C. A.; Walker, F. A.; Scheidt, W. R. J. Am. Chem. Soc. 1994, 116, 7196-7203.

62. "Axial Ligand Orientation in Iron(III) Porphyrinates: Effect of Axial p-Acceptors. Characterization of the Low-Spin Bis-Pyridine Complex [Fe(TPP)(4-CNPy)2]ClO4," Safo, M. K.; Walker, F. A.; Raitsimring, A. M.; Walters, W. P.; Dolata, D. P.; Debrunner, P. G.; Scheidt, W. R. J. Am. Chem. Soc. 1994, 116, 7760-7770.

63. "High Affinity Histamine-Binding and Anti-Histaminic Activity of the Salivary NO-Carrying Heme Protein of Rhodnius prolixus," Ribeiro, J. M. C.; Walker, F. A. J. Exper. Med. 1994, 180, 2251-2257.

64. "A Salivary Nitrophorin (NO-Carrying Heme Protein) in the Bedbug, Cimex lectularius," Valenzuela, J. G.; Walker, F. A.; Ribeiro, J. M. C. J. Exper. Biol. 1995, 198, 1519-1526.

65. "A Novel Heme Protein from Hemolymph and Oocytes of the Blood-Sucking Bug, Rhodnius prolixus: Isolation, Characterization and Binding of Heme," Oliveira, P. L.; Kawooya, J. K.; Ribeiro, J. M. C.; Meyer, T.; Poorman, R.; Alves, E. W.; Walker, F. A.; Machado, E. A.; Nussenzveig, R. H.; Padovan, G. J.; Masuda, H. J. Biol. Chem. 1995, 270, 10897-10901.

66. "NMR Studies of Electron Spin Relaxation, Magnetic Anisotropy, Hindered Ligand Rotation, Curie Behavior and Ligand Exchange in some Novel Weakly Spin-Coupled Oxomolybdenum(V)/Iron(III) Porphyrinate Complexes," Basu, P.; Shokhirev, N. V.; Enemark, J. H.; Walker, F. A. J. Am. Chem. Soc. 1995, 117, 9042-9055.

67. "Electronic Effects in Transition Metal Porphyrins. 8. The Effect of Porphyrin Substituents, Axial Ligands, 'Steric Crowding,' Solvent and Temperature on the 57Fe Chemical Shifts of a Series of Model Heme Complexes," Mink, L. M.; Polam, J. R.; Christensen, K. A.; Bruck, M. A.; Walker, F. A. J. Am. Chem. Soc. 1995, 117, 9329-9339.

68. "Biosynthetic Preparation of Isotopically Labeled Heme," Rivera, M.; Walker, F. A. Anal. Biochem. 1995, 230, 295-302.

69. "Analysis of the Temperature Dependence of the 1H Contact Shifts of b-Pyrrole Substituents in Low-Spin Fe(III) Model Hemes and Heme Proteins: Explanation of "Curie" and "Anti-Curie" Behavior within the Same Molecule," Shokhirev, N. V.; Walker, F. A. J. Phys. Chem. 1995, 99, 17795-17804.

70. "Magnetic Field (g-Value) Dependence of Proton Hyperfine Couplings Obtained from ESEEM Measurements: Determination of the Orientation of the Magnetic Axes of Model Heme Complexes in Glassy Media," Raitsimring, A. M.; Borbat, P.; Shokhireva, T. Kh.; Walker, F. A. J. Phys. Chem. 1996, 100, 5235-5244.

71. "Valence Electron Cloud Asymmetry from Two Points of View: A Correlation between Mössbauer Quadrupole Splittings and 57Fe NMR Chemical Shifts of Diamagnetic Iron(II) Porphyrinates," Polam, J. R.; Wright, J. L.; Christensen, K. A.; Walker, F. A.; Flint, H.; Winkler, H.; Grodzicki, M.; Trautwein, A. X. J. Am. Chem. Soc. 1996, 118, 5272-5276.

72. "Low-Temperature MCD Studies of Low-Spin Ferric Complexes of Tetramesitylporphyrin: Evidence for a Novel (dxz,dyz)4(dxy)1 Ground State which Models the Spectroscopic Properties of Heme d," Cheesman, M. R.; Walker, F. A. J. Am. Chem. Soc. 1996, 118, 7373-7380.

73. "Models of the Cytochromes. The Redox Properties and Thermodynamic Stabilities of Complexes of "Hindered Iron(III) and Iron(II) Tetraphenylporphyrinates with Substituted Pyridines and Imidazoles," Nesset, M. J. M.; Shokhirev, N. V.; Enemark, P. D.; Jacobson, S. E.; Walker, F. A. Inorg. Chem. 1996, 35, 5188-5200.

74. "Molecular Cloning, Overexpression in Escherichia coli, Structural and Functional Characterization of House Fly Cytochrome b5," Guzov, V. I.; Houston, H. L.; Murataliev, M. B.; Walker, F. A.; Feyereisen, R. J. Biol. Chem. 1996, 271, 26637-26645.

75. "p -Acid Ligands in Iron(III) Porphyrinates. Characterization of Low-Spin Bis(t-Butylisocyanide)(porphyrinato)iron(III) Complexes Having (dxz,dyz)4(dxy)1 Ground States," Walker, F. A.; Nasri, H.; Turowska-Tyrk, I.; Mohanrao, K.; Watson, C. T.; Shokhirev, N. V.; Debrunner, P. G.; Scheidt, W. R. J. Am. Chem. Soc. 1996, 118, 12109-12118.

76. "Oxomolybdenum(V)/Fe(III) Porphyrinate Complexes: The Effect of Axial Ligand Plane Orientation on Complex Stability, Reduction Potential, and NMR and EPR Spectra," Basu, P.; Raitsimring, A. M.; Enemark, J. H.; Walker, F. A. Inorg. Chem. 1997, 36, 1088-1094.

77. "2-D NMR Investigations of the Rates of Rotation of Axial Ligands in Six-Coordinate Low-Spin Iron(III) and Co(III) Tetraphenylporphyrinates Having 2,6-Disubstituted Phenyl Rings: Quantitation of Rate Constants from 1H EXSY Cross Peak Intensities," Shokhirev, N. V.; Shokhireva, T. Kh.; Polam, J. R.; Watson, C. T.; Raffii, K.; Simonis, U.; Walker, F. A. J. Phys. Chem. A 1997, 101, 2778-2886.

78. "Investigations of Rotation of Axial Ligands in Six-Coordinate Low-Spin Iron(III) Tetraphenylporphyrinates: Measurement of Rate Constants from Saturation Transfer Experiments and Comparison to Molecular Mechanics Calculations," Momot, K. I.; Walker, F. A. J. Phys. Chem. A 1997, 101, 2787-2795.

79. "Electronic Structure, Porphyrin Core Distortion and Fluxional Behavior of Bis-Ligated Low-Spin Iron(II) Tetramesitylporphyrinates," Grodzicki, M.; Flint, H.; Winkler, H.; Walker, F. A.; Trautwein, A. X. J. Phys. Chem. A 1997, 101, 4202-4207. . A. J. Phys. Chem. B 1997, 101, 8683-8691.

83. "Proton NMR Relaxation in Six-Coordinate Low-Spin Iron(III) Tetraphenylporphyrinates: Temperature Dependence of Proton Relaxation Rates and Interpretation of NOESY Experiments," Momot, K. I.; Walker, F. A. J. Phys. Chem. A, 1997, 101, 9207-9216.

84. "Co/Counter-Rotation of Magnetic Axes and Axial Ligands in Low-Spin Ferriheme Systems," Shokhirev, N. V.; Walker, F. A. J. Am. Chem. Soc. 1998, 120, 981-990.

85. "Porphyrin and Ligand Protons as Internal Labels for Determination of Ligand Orientation in ESEEMS of Low-Spin d5 Complexes in Glassy Media: ESEEM Studies of the Orientation of the g-Tensor with Respect to the Planes of Axial Ligands and Porphyrin Nitrogens of Low-Spin Ferriheme Models of the Cytochromes," Raitsimring, A. M.; Walker, F. A. J. Am. Chem. Soc. 1998, 120, 991-1002.

86. "Electronic Effects in Transition Metal Porphyrins. 9. The Effect of Ortho-Phenyl Substituents on the Spectroscopic Properties and Axial Ligand Binding Constants of Fe(III)Tetraphenylporphyrins," Koerner, R.; Wright, J. L.; Nesset, M. J. M.; Ding, X. D.; Aubrecht, K.; Watson, R.; Barber, R. A.; Tipton, A. R.; Norvell, C. J.; Mink, L. M.; Simonis, U.; Walker, F. A. Inorg. Chem. 1998, 37, 733-745.

87. "Crystal Structures of a Nitric Oxide Transport Protein from a Blood-Sucking Insect," Weichsel, A.; Andersen, J. F.; Champagne, D. E.; Walker, F. A.; Montfort, W. R. Nature Struct. Biol. 1998, 5, 304-309.

88. "ROESY Spectra of Paramagnetic Model Heme Complexes: Unambiguous Differentiation of Cross Peaks Due to Chemical Exchange and the Nuclear Overhauser Effect," Shokhireva, T. Kh.; Nesset, M. J. M.; Walker, F. A. Inorg. Chim. Acta 1998, 272/1-2, 204-210.

89. "Analysis of the Temperature Dependence of the 1H and 13C Isotropic Shifts of Horse Heart Ferricytochrome c: Explanation of Curie, Anti-Curie and Nonlinear Pseudocontact Shifts in a Common Two-Level Framework," Banci, L.; Bertini, I.; Luchinat, C.; Pierattelli, R.; Shokhirev, N. V.; Walker, F. A. J. Am. Chem. Soc. 1998, 120, 8472-8479.

90. “The Effect of Axial Ligand Plane Orientation on the Contact and Pseudocontact Shifts of Low-Spin Ferriheme Proteins,” Shokhirev, N. V.; Walker, F. A. J. Biol. Inorg. Chem. 1998, 3, 581-594.

91. “Rate and Thermodynamic Parameters of Rotation of Axial Ligands in a Bis-Ligated Tetramesityl-porphyrin Complex Measured from the Temperature Dependence of the 1H Transverse Re-laxation Rates,” Momot, K. I.; Walker, F. A. J. Phys. Chem. A 1998, 102, 10682-10688.

92. “Nitric Oxide Binding to the Ferri- and Ferroheme States of Nitrophorin 1, a Reversible NO-Binding Heme Protein from the Saliva of a Blood-Sucking Insect, Rhodnius prolixus,” Ding, X. D.; Weichsel, A.; Balfour, C.; Shokhireva, T. Kh.; Pierik, A.; Averill, B. A.; Montfort, W. R.; Walker, F. A. J. Am. Chem. Soc. 1999, 121, 128-138.

93. “Two- and Four-Pulse ESEEM Studies of the Heme Binding Center of a Low-Spin Ferriheme Pro-tein: The Importance of a Multi-Frequency Approach,” Astashkin, A. V.; Raitsimring, A. M.; Walker, F. A. Chem. Phys. Lett. 1999, 306, 9-17.

94. "Reevaluation of the Gas-Phase Valence Photoelectron Spectrum of Octaethylporphyrin and Tetraphenylporphyrin," Gruhn, N. E.; Lichtenberger, D. L.; Ogura, H.; Walker, F. A. Inorg. Chem. 1999, 38, 4023-4027.

95. "Heme Methyl 1H Chemical Shifts as Structural Parameters in Some Low Spin Ferriheme Proteins," Bertini, I.; Luchinat, C.; Parigi, G.; Walker, F. A. J. Biol. Inorg. Chem. 1999, 4, 515-519; 846.

96. "ESEEM and Mössbauer Studies of the Ferriheme Model Compound Tetraphenylporphyrinatoiron(III)-bis-(3-aminopyrazole), [TPPFe(NH2PzH)2]Cl," Schünemann, V.; Raitsimring, A. M.; Benda, R.; Trautwein, A. X.; Shokhireva, T. Kh.; Walker, F. A. J. Biol. Inorg. Chem. 1999, 4, 708-716.

97. "Two Crystalline Forms of Low-Spin [Fe(TMP)(5-MeHIm)2]ClO4. Relative Parallel and Perpendicular Axial Ligand Orientations," Munro, O. Q.; Serth-Guzzo, J. A.; Turowska-Tyrk, I.; Mohanrao, K.; Walker, F. A.; Debrunner, P. G.; Scheidt, W. R. J. Am. Chem. Soc. 1999, 121, 11144-11155.

98. "The Effect of Axial Ligand Plane Orientation on the Isotropic Shifts of Traylor and Berzinis' Dichelated Protohemin Cyanide Complexes," Minniear, A. B.; Shokhireva, T. Kh.; Walker, F. A. Inorg. Chem. 1999, 38, 5856-5859.

99. "Electronic Effects in Transition Metal Porphyrins. 10. The Effect of Ortho Substituents on the Temperature Dependence of the NMR Spectra of a Series of Spin Admixed 2,6-Disubstituted Tetraphenylporphinatoiron(III) Perchlorates," Nesset, M. J. M.; Shokhirev, N. V.; Jacobson, S. E.; Walker, F. A. Inorg. Chem. 2000, 39, 532-540.

100. "Structure and Stability Effects of the Mutation of Glycine 34 to Serine in Rhodobacter capsulatus Cytochrome c2," Zhao, D.; Hutton, H. M.; Meyer, T. E.; Walker, F. A.; MacKenzie, N. E.; Cusanovich, M. A. Biochemistry 2000, 39, 4053-4061.

101. "Structural, Magnetic and Dynamic Characterization of the dxz,dyz)4(dxy)1 Ground State Low-Spin Iron(III) Tetraphenylporphyrinate Complex [p-TTP)Fe(2,6-XylylNC)2]CF3SO3," Simonneaux, G.; Schünemann, V.; Morice, C.; Carel, L.; Toupet, L.; Winkler, H.; Trautwein, A. X.; Walker, F. A. J. Am. Chem. Soc., 2000, 122, 4366-4377.

102. "NMR and EPR Investigations of Iron Corrolates: Iron(III) Corrolate p Cation Radicals or Iron(IV) Corrolates?" Cai, S.; Walker, F. A.; Licoccia, S. Inorg. Chem. 2000, 39, 3466-3478.

103. "Mössbauer Spectroscopic Studies of Six-coordinate Heme-Nitric Oxide Complex of Iron(III) Octaethylporphyrin N-Methylimidazole, the First Model of the Nitrophorin-NO Complexes," Schünemann, V.; Benda, R.; Trautwein, A. X.; Walker, F. A. Israel J. Chem. 2000, 40, 9-14. (invited)

104. "Kinetics and Equilibria in Ligand Binding by Nitrophorins 1-4: Evidence for Stabilization of a NO-Ferriheme Complex through a Ligand-Induced Conformation Trap," Andersen, J. F.; Ding, X. D.; Balfour, C.; Champagne, D. E.; Walker, F. A.; Montfort, W. R. Biochemistry 2000 39, 10118-10131.

105. "1H Pulsed ENDOR and ESEEM Evidence That the Bis-Imidazole Complexes of Iron(III) Tetraphenylchlorin and Tetraphenylporphyrin Have the Same Order of g-Values and the Same Electronic Ground State," Astashkin, A. V.; Raitsimring, A. M.; Walker, F. A. J. Am. Chem. Soc., 2001, 123, 1905-1913.

106. "Molecular Structures and Magnetic Resonance Spectroscopic Investigations of Highly Distorted Six-Coordinate Low-Spin Iron(III) Porphyrinate Complexes," Ogura, H.; Yatsunyk, L.; Medforth, C. J.; Smith, K. M.; Barkigia, K. M.; Renner, M. W.; Melamed, D.; Walker, F. A. J. Am. Chem. Soc. 2001, 123, 6564-6578.

107. "Ligand-Induced Heme Ruffling and Bent NO Geometry in Ultra-High Resolution Structures of Nitrophorin 4," Roberts, S. A.; Weichsel, A.; Qin, Y.; Shelnutt, J. A.; Walker, F. A.; Montfort, W. R. Biochemistry 2001, 40, 11327-11337.

108. "Synthesis of a trans-Disubstituted Tetraarylporphyrin with Two Sterically Large Groups Near the Potential Sites of Axial Ligation: An Application of MacDonald '2+2' Porphyrin Synthesis in Aqueous Anionic Surfactant," Ogura, H.; Walker, F. A. Inorg. Chem. 2001, 40, 5729-5732.

109. "Cyanide Complexes of Iron Corrolates: Spin Delocalization and Autoreduction," Cai, S.; Licoccia, S.; Walker, F. A. Inorg. Chem.2001, 40, 5795-5798.

110. "Human Cytosolic Iron Regulatory Protein 1 Contains a Linear Iron-Sulfur Cluster," Gailer, J.; George, G. N.; Pickering, I. J.; Prince, R. C.; Kohlhepp, P.; Zhang, D.; Walker, F. A.; Winzerling, J. J. J. Am. Chem. Soc. 2001, 123, 10121-10122.

111. "A Resonance Raman Spectroscopic Study of Nitrophorin 1, a Nitric Oxide-Binding Heme Protein from the Saliva of the Blood-Sucking Insect Rhodnius prolixus, and its NO and Cyanide Adducts," Maes, E. M.; Walker, F. A.; Montfort, W. R.; Czernuszewicz, R. S. J. Am. Chem. Soc. 2001, 123, 11664-11672.

112. "Pulsed EPR Characterization of the Low-Spin Iron(III) Porphyrinate Complexes with Phenyl Isocyanide Ligands Having the dxy Orbital Bround State." Astashkin, A. V.; Rainsimring, A. M.; Kennedy, A. R.; Shokhireva, T. Kh.; Walker, F. A. J. Phys. Chem. A 2002, 106, 74-82.

113. "Models of the Low-Spin Iron(III) Hydroperoxide Intermediate of Heme Oxygenase: Magnetic Resonance Evidence for Thermodynamic Stabilization of the (dxy)1 Electronic State at Ambient Temperatures," Rivera, M.; Caignan, G. A.; Astashkin, A. V.; Raitsimring, A. M.; Shokhireva, T. Kh.; Walker, F. A. J. Am. Chem. Soc. 2002, 124, 6077-6089.

114. "Is the Corrolate Macrocycle Innocent or Non-Innocent? Magnetic Susceptibility, Mössbauer, 1H NMR and DFT Investigations on Chloro- and Phenyliron Corrolates," Zakharieva, O.; Schünemann, V.; Zakharieva, O.; Schünemann, V.; Gerdan, M.; Licoccia, S.; Cai, S.; Walker, F. A.; Trautwein, A. X. J. Am. Chem. Soc 2002, 124, 6636-6648.

115. "Chloroiron meso-Triphenylcorrolates: Electronic Ground State and Spin Delocalization," Cai, S.; Licoccia, S.; Paolesse, R.; Nardis, S.; Bulach, V.; Zimmer, B.; Shokhireva, T. Kh.; Walker, F. A. Inorg. Chim. Acta. 2002, 335, 171-178.

116. "19F Isotropic Shifts in Paramagnetic Iron(III) Octaethyltetraphenylporphyrinate and Tetraphenylporphyrinate Complexes of a Variety of Electronic Ground States: Implications for the Electron Configuration of Chloroiron Tri-(pentafluorophenyl)corrolate," Yatsunyk, L.; Walker, F. A. Inorg. Chim. Acta 2002, 337, 266-274.

117. "How a Blood Sucking Insect Gets Its Meal: The Ferriheme Proteins Nitrophorin 2 and 4 Studied by Mössbauer Spectroscopy,” Wegner, P.; Benda, R.; Schünemann, V.; Trautwein, A. X.; Berry, R. E.; Balfour, C. A.; Wert, D.; Walker, F. A.  Hyperfine Interact. C 2002, 5, 253-256.

118. "Assignment of Heme Resonances and Determination of the Electronic Structures of High- and Low-Spin Nitrophorin 2 by 1H and 13C NMR Spectroscopy: An Explanation of the Order of Heme Methyl Resonances in High-Spin Ferriheme Proteins," Shokhireva, T. Kh.; Shokhirev, N. V.; Walker, F. A. Biochemistry 2003, 42, 679-693.

119. "Electrochemical and NMR Spectroscopic Studies of Distal Pocket Mutants of Nitrophorin 2: Stability, Structure and Dynamics of Axial Ligand Complexes," Shokhireva, T. Kh.; Berry, R. E.; Uno, E.; Balfour, C. A.; Zhang, H.; Walker, F. A. Proc. Natl. Acad. Sci. USA 2003, 100, 3778-3783.

120. "Models of the Bis-Histidine-Coordinated Ferricytochromes: Mössbauer and EPR Spectroscopic Studies of Low-Spin Fe(III) Tetrapyrroles of Various Electronic Ground States and Axial Ligand Orientations," Benda, R.; Schünemann, V.; Trautwein, A. X.; Cai, S.; Polam, J. R.; Watson, C. T.; Shokhireva, T. Kh.; Weischel, A.; Montfort, W. R.; Walker, F. A. J. Biol. Inorg. Chem. 2003, 8, 787-801.

121. "Low-Spin Ferriheme Models of the Mitochondrial Cytochromes: Correlation of Molecular Structure with EPR and Mössbauer Spectral Type," Yatsunyk, L.; Teschner, T.; Carducci, M. D.; Schünemann, V.; Trautwein, A. X.; Walker, F. A. J. Am. Chem. Soc. April, 2003, 125, 15986-16005.

122. "Structural, NMR and EPR Studies of S=1/2 and S=3/2 Fe(III) bis-4-Cyanopyridine Complexes with Dodecasubstituted Porphyrins," Yatsunyk, L. A.; Walker, F. A. J. Inorg. Chem. 2004, ,43, 757-777.

123. "Axial Ligand Complexes of the Rhodnius Nitrophorins: Electrochemisty, Binding Constants, and Structures of the 4-Iodopyrazole and Imidazole Complexes of NP4," Berry, R. E.; Ding, X. D.; Shokhireva, T. Kh; Weichsel, A.; Monfort, W. R.; Walker, F. A. J. Biol. Inorg. Chem.. 2004, 9, 135-144.

124. "Chimeragenesis of the Fatty Acid Binding Site of Cytochrome P450BM3. Replacement of the Residues 73-82 with the Homologous Residues from the Insect Cytochrome P450 CYP4C7," Murataliev, M. B.; Trinh, L. N.; Moser, L. V.; Bates, R. B.; Feyereisen, R.; Walker, F. A. Biochemistry 2004, 43, 1771-1780.

125. "NMR and EPR Spectroscopic and Structural Studies of Low-Spin (dxz,dyz)4(d xy)1 Ground State Fe(III) bis-(tert-Butylisocyandei) Complexes of Dodecasubstituted Porphyrinates," Yatsunyk, L. A.; Walker, F. A.  Inorg. Chem. 2004, 43, 757 - 777.

126. "Low-Spin Ferriheme Models of the Cytochromes: Correlation of Molecular Structure with EPR and Mössbauer Spectral Parameters,” Teschner, T.; Trautwein, A. X.; Schünemann, V.; Yatsunyk, L.; Walker, F. A.  Hyperfine Interact. 2004, 156/157, 285-291.

127.  "Cloning and Functional Expression of Drosophila melanogaster P450 6A8, which Catalyzes Lauric Acid (ω-1)-hydroxylation,” Helvig, C.; Tijet, N.; Feyereisen, R.; Walker, F. A.; Restifo, L. L.  Biochem. Biophys. Res. Commun. 2004, 325, 1495-1502.

128. "Heme-Assisted Nitrosothiolation of a Proximal Thiol in a Nitric Oxide Transport Protein,” Weichsel, A.; Maes, E. M.; Andersen, J. F.; Valenzuela, J. G.; Shokhireva, T. Kh.; Walker, F. A.; Montfort, W. R.  Proc. Natl. Acad. Sci. USA 2005, 102, 594-599.

129.  "Magnetic Resonance Investigations of Mono-Oxo-Octaethylchlorinatoiron(III) Chloride and Its Bis-Imidazole Complex,” Cai, S.; Belikova, E.; Yatsunyk, L.; Stolzenberg, A. M.; Walker, F. A.  Inorg. Chem. 2005, 44, 1882-1889.

130.  "NMR and EPR Studies of the Bis-Pyridine and Bis-t-Butylisocyanide Complexes of Iron(III) Octaethylchlorin Complexes,” Cai, S.; Lichtenberger, D. L.; Walker, F. AInorg. Chem. 2005, 44, 1890-1903.

131.  "Magnetic Resonance Spectroscopic Investigations of the Electronic Ground and Excited States in Strongly Non-Planar Iron(III) Dodecasubstituted Porphyrins,” Yatsunyk, L. A.; Shokhirev, N. V.; Walker, F. A.  Inorg. Chem. 2005, 44, 2848-2866.

132.  "Kinetics of Ring Inversion in Strongly Non-Planar Iron(III) Octaalkyltetraphenylporphyrinates,” Yatsunyk, L. A.; Ogura, H.; Walker, F. A.  Inorg. Chem. 2005, 44, 2867-2881.

133.  "Characterization of the Copper(II) Binding Site in the Pink Copper-Binding Protein CusF by Electron Paramagnetic Resonance Spectroscopy,” Astashkin, A. V.; Raitsimring, A. M.; Walker, F. A.; Rensing, C.; McEvoy, M. M.  J. Biol. Inorg. Chem. 2005, 10, 221-230.

134.  "Synthesis, and Characterization of the Iron(III) Complexes of Tetra-(β,β’-tetramethylene)-tetraphenylporphyrin, (TC6TPP)FeCl and (TC6TPP)FeONO2” Yatsunyk, L. A.; Walker, F. A. J. Porphyrins Phthalocyanines 2005, 9, 214-228.

135.  "NMR and Structural Investigations of Nonplanar Iron Corrolates:  Modified Patterns of Spin Delocalization and Coupling in Slightly Saddled Chloroiron(III) Corrolate Radicals,” Nardis, S.; Paolessee, R.; Licoccia, S.; Fronczek, F. R.; Vicente, M. G. H.; Shokhireva, T. Kh.; Walker, F. A.  Inorg. Chem. 2005, 44, 7030-7046.

136.  "NMR Studies of Low-Spin Fe(III) Complexes of "Hindered” Porphyrins Complexed to Imidazoles and Pyridines of Widely Differing Basicities,” Watson, C. T.; Cai, S.; Shokhirev, N. V.; Walker, F. A.  Inorg. Chem. 2005, 44, 7468-7484.

137. “Low-Spin Ferriheme Models of the Cytochromes: Mössbauer Spectra of Six Crystalline Com-plexes Having Axial Ligand Plane Dihedral Angles Ranging from 0o to 90o,” Teschner, T.; Yatsunyk, L. A.; Schünemann, V.; Paulsen, H.; Winkler, H.; Hu, C.; Scheidt, W. R.; Walker, F. A.; Trautwein, A. X. J. Am. Chem. Soc. 2006, 128, 1379-1389.

138. “Structure and Stereochemistry of Products of Hydroxylation of Human Steroid Hormones by a Housefly Cytochrome P450 (CYP6A1),” Jacobsen, N. E.; Kövér, K.; Murataliev, M. B.; Feyereisen, R.; Walker, F. A. Magn. Reson. Chem. 2006, 44, 467-474.

139. “NMR and EPR Studies of Chloroiron(III) Tetraphenylchlorin an Its Complexes with Imidazoles and Pyridines of Widely Differing Basicities,” Cai, S.; Shokhireva, T. Kh.; Lichtenberger, D. L.; Walker, F. A. Inorg. Chem. 2006, 45, 3519-3531.

140. “The Heme Environment Structure of Mouse Neuroglobin: Histidine Imidazole Plane Orientations Obtained from NMR and EPR Spectroscopy As Compared to X-ray Crystallography,” Walker, F. A. J. Biol. Inorg. Chem. 2006, 11, 391-397.

141. “Models of the Cytochromes: Crystal Structures and EPR Spectral Characterization of Low-Spin Bis-Imidazole Complexes of (OETPP)FeIII Having Intermediate Ligand Plane Dihedral An-gles,” Yatsunyk, L. A.; Dawson, A.; Carducci, M. D.; Nichol, G. S.; Walker, F. A. Inorg. Chem. 2006, 45, 5417-5428.

142. “Assignment of the Ferriheme Resonances for the High-Spin Form of Nitrophorins 1 and 4 by 1H and 13C NMR Spectroscopy: Comparison to Structural Data Obtained from X-Ray Crystallography,” Shokhireva, T. Kh.; Berry, R. E.; Shokhirev, N. V.; Balfour, C,; Zhang, H.; Walker, F. A. Inorg. Chem. 2007, 46, 170-178.

143. “Assignment of the Ferriheme Resonances for Low-Spin Complexes of Nitrophorins 1 and 4 by 1H and 13C NMR Spectroscopy: Comparison to Structural Data Obtained from X-Ray Crystallography,” Shokhireva, T. Kh.; Weichsel, A.; Smith, K. M.; Berry, R. E.; Shokhirev, N. V.; Balfour, C,; Zhang, H.; Montfort, W. R.; Walker, F. A. Inorg. Chem. 2007, 46, 170-178.

144. “Fe L-Edge XAS of Low-Spin Ferro- and Ferriheme Relative to Non-Heme Fe(II) and -(III) Complexes: Mixing of Metal d and Porphyrin Sigma and Pi Orbitals,” Hocking, R. K.; Wasinger, E. C.; Yan, Y.; deGroot, F. M. F.; Walker, F. A.; Hodgson, K. O.; Hedman, B.; Solomon, E. I. J. Am. Chem. Soc. 2007, 129, 113-125.

145. “Overexpression in Escherichia coli and Functional Reconstitution of the Liposome Binding Ferriheme Protein Nitrophorin 7 (NP7) from the Blood Sucking Bug Rhodnius prolixus,” Knipp, M.; Zhang, H.; Berry, R. E.; Walker, F. A. Prot. Expr. Purif. 2007, 54, 183-191.

146. “Effect of the N-Terminus on Heme Cavity Structure, Ligand Equilibrium and Rate Constants, and Reduction Potentials of Nitrophorin 2 from Rhodnius prolixus,” Berry, R. E.; Shokhireva, T. Kh.; Filippov, I.; Shokhirev, M. N.; Zhang, H.; Walker, F. A. Biochemistry 2007, 46, 6830-6843. (DOI: 10.1021/bi7002263)

147. “Solution NMR Studies of Iron(II) Spin Crossover Complexes,” Weber, B.; Walker, F. A. Inorg. Chem. 2007, 46, 6794-6803..

148. “Nitrophorin 7 from the Blood-Feeding Insect Rhodnius prolixus Reveals an Important Role of Its Isoform-Specific N-Terminus for Proper Protein Function,” Knipp, M.; Yang, F.; Zhang, H.; Shokhirev, M. N.; Berry, R. E.; Shokhireva, T. Kh.; Walker, F. A. Biochemistry, 2007, 46, 13254-13268.

149. “Assignment of Ferriheme Resonances for High- and Low-Spin Forms of Nitrophorin 3 by 1H and 13C NMR Spectroscopy and Comparison to Nitrophorin 2: Heme Pocket Structural Similarities and Differences,” Shokhireva, T. Kh.; Berry, R. E.; Zhang, H.; Shokhirev, N. V.; Walker, F. A. Inorg. Chim. Acta 2008, 361, 925-940.

150. “The Effect of Mutation of F87 on the Properties of CYP102A1-CYP4C7 Chimeras: Altered Regiospecificity and Substrate Selectivity,” Chen, C.-K. J.; Shokhireva, T. Kh.; Walker, F. A. J. Biol. Inorg. Chem. 2008, 13, 318-824.

151. “Assignment of Ferriheme Resonances for High- and Low-Spin Forms of the Symmetrical Hemin-Reconstituted Nitrophorins 1-4 by 1H and 13C NMR Spectroscopy: The Dynamics of Heme Ruffling Deformations,” Shokhireva, T. Kh.; Shokhirev, N. V.; Berry, R. E.; Zhang, H.; Walker, F. A.  J. Biol. Inorg. Chem. 2008, 13, 941-959.

152. “P450 Reductase and Cytochrome b5 Interactions with Cytochrome P450: Effects on House Fly CYP6A1 Catalysis,” Murataliev, M. B.; Guzov, V. M.; Walker, F. A.; Feyereisen, R. Insect Biochem. Mol. Biol. 2008, 38, 1008-1015.

153. “pH Dependent Mechanism of Nitric Oxide Release in Nitrophorins 2 and 4,” Swails, J. M.; Meng, Y.; Walker, F. A.; Marti, M. A.; Estrin, D. A.; Roitberg, A. E. J. Phys. Chem. B 2009, 113, 1192-1201.

154. “The Effect of Mutation of Carboxylate Side-Chain Amino Acids Near the Heme on the Reduction Potentials and Ligand Binding Constants of Nitrophorin 2 and its NO, Histamine and Imidazole Complexes,” Berry, R. E.; Shokhirev, M. N.; Ho, A. Y. W.; Yang, F.; Shokhireva, T. K.; Zhang, H.; Weichsel, A.; Montfort, W. R.; Walker, F. A. J. Am. Chem. Soc. 2009, 131, 2313-2327.

155. “Fe L- and K-edge XAS of Low-spin Ferric Corrole: Bonding and Reactivity Relative to Low-spin Ferric Porphyrin,” Hocking, R. K.; DeBeer George, S.; Gross, Z.; Walker, F. A.; Hodgson, K. O.; Hedman, B.; Solomon, E. I. Inorg. Chem. 2009 , 48, 1678-1688.

156. “1H and 13C NMR Spectroscopic Studies of the Ferriheme Resonances of the Low- Spin Imidazole, Histamine and Cyanide Complexes of wt Nitrophorin 2 and NP2(V24E) as a Function of pH,” Yang, F.; Knipp, M.; Berry, R. E.; Shokhireva, T. K.; Zhang, H.; Walker, F. A. J. Biol. Inorg. Chem. 2009, 14, 1077-1095.

157. “Scanning Chimeragenesis: The Approach Used to Change the Substrate Selectivity of Fatty Acid Monooxygenase CYP102A1 to That of Terpene ω-Hydroxylase CYP4C7,” Chen, C.-K. J.; Berry, R. E.; Shokhireva, T. K.; Murataliev, M. B.; Zhang, H.; Walker, F. A. J. Biol. Inorg. Chem. 2010, 15, 159-174.

158. “The Unprecedented Peroxidase-like Activity of Rhodnius prolixus Nitrophorin 2: Identification of the [FeIV=O Por·]+ and [FeIV=O Por](Tyr38·) Intermediates and Their Role(s) in Substrate Oxidation,” Singh, R.; Berry, R. E.; Yang, F.; Zhang, H.; Walker, F. A.; Ivancich, A. I. Biochemistry 2010, 49, 8857-8872.

159. “De nove Design and Molecular Assembly of a Transmembrane Diporphyrin-binging Protein Complex,” Korendovych, I. V.; Senes, A.; Kim, Y. H.; Lear, J. D.; Fry, H. C.; Therien, M. J.; Blasie, J. K.; Walker, F. A.; DeGrado, W. F. J. Am. Chem. Soc 2010, 132, 15516-15518.

160. "NMR Studies of Nitrophorin Distal Pocket Side Chain Effects on the Heme Orientation and Seating of NP2 as Compared to NP1,” Shokhireva, T. K.; Berry, R. E.; Zhang, H.; Walker, F. A. J. Inorg. Biochem. 2011, 105, 1238-1257.

161. “Oxidation and Loss of Heme in Soluble Guanylyl Cyclase from Manduca sexta,” Fritz, B. G.; Hu, X.; Brailey, J. L.; Berry, R. E.; Walker, F. A.; Montfort, W. R. Biochemistry 2011, 50, 5813-5815.

162. “Nuclear Inelastic Scattering of Heme Proteins: From Iron-Ligand Vibrations to Low Energy Protein Modes,” Moeser, B.; Janoschka, A.; Wolny, J.; Filipov, I.; Chumakov, A. I.; Walker, F. A.; Schünemann, V. Hyperfine Interact. 2012, 206, 19-22.

163. “Nitrated Derivatives of Leghemoglobins in Legume Nodules,” Joaquín Navascués, J.; Pérez-Rontomé, C.; Gay, M.; Marcos, M.; Yang, F.; Walker, F. A.; Desbois, A.; Abián, J.; Becana, M. Proc. Natl. Acad. Sci. U.S.A. 2012, 109, 2660-2665.

164. “Nuclear Inelastic Scattering and Mössbauer Spectroscopy as Local Probes for Ligand Binding Modes and Electronic Properties in Proteins: Vibrational Behavior of a Ferriheme Center Inside a β-Barrel Protein,” Moeser, B.; Janoschka, A.; Wolny, J. A.; Paulsen, H.; Filippov, I.; Berry, R. E.; Zhang, H.; Chumakov, A. I.; Walker, F. A.; Schünemann, V. J. Am. Chem. Soc. 2012, 134, 4216-4228.

165. “Tyrosine Triad at the Interface between the Rieske Iron-Sulfur Protein, Cytochrome c1 and Cytochrome c2 in the bc1 Complex of Rhodobacter capsulatus,” Kyndt; J., Fitch, J. C.; Berry, R. E.; Stewart, M. C.; Whitley, K.; Meyer, T. E.; Walker, F. A.; Cusanovich, M. A. Biochim. Biophys. Acta - Bioenergetics 2012, 1817, 811-818.

166. “Assignment of the 1H NMR Resonances of Protein Residues in Close Proximity to the Heme of the Nitrophorins: Similarities and Differences among the Four Proteins from the Saliva of the Adult Blood-Sucking Insect, Rhodinus prolixus,” Shokhireva, T. K.; Walker, F. A. J. Biol. In-org. Chem. 2012, 17, 911-926.

167. “Native N-Terminus Nitrophorin 2 from the Kissing Bug: Similarities to and Differences from NP2(D1A),” Berry, R. E.; Muthu, D.; Garrett, S. A.; Shokhireva, T. K.; Zhang, H.; Walker, F. A. Chem. Biodiv. 2012, 9, 1739-1755. (DOI: 10.1002/cbdv.201100449) PMCID: PMC3523740

168. “Electron Spin Density on the Axial His Ligand of High-Spin and Low-Spin Nitrophorin 2 Probed by Heteronuclear NMR Spectroscopy,” Abriata, L. A.; Zaballa M-E.; Berry, R. E.; Yang, F.; Zhang, H.; Walker, F. A.; Vila, A. J. Inorg. Chem. 2013, 52, 1285-1295. (DOI:10.1021/ic301805y) PMCID: PMC3594510

169. “Determination of the Principal g-Values of Type I or Highly-Anisotropic Low Spin (HALS) Ferriheme Centers in Frozen Solutions,” Astashkin,* A. V.; Walker, F. A. J. Magn. Reson. 2013, 231, 15-21. PMID 23562666

170. “Proton NMR Investigations of Intermediate Spin Iron(III) Complexes with Macrocyclic N42- Ligands,” Weber, B.;* Walker, F. A.; Karaghiosoff, K. Z. Anorg. Allg. Chem. 2013, 639, 1498-1503

171. “NMR Studies of the Dynamics of Nitrophorin 2 Bound to Nitric Oxide,” Muthu, D.; Berry, R. E.; Zhang, H.; Walker, F. A. Biochemistry 2013, 52, 7910-7925. (DOI: 10.1021/bi010396) PMID: 24116947

172. “Nitric Oxide Heme Interactions in Nitrophorin 7 Investigated by Nuclear Inelastic Scattering,” Auerbach, H.; Faus, I.; Wolny, J. A.; Walker, F. A.; Chumakov, H.; Ogata, H.; Knipp, M.; Schünemann, V. Hyperfine Interactions 2014, 226, 439-443. (DOI 10.1007/s10751-013-0982-7)

173. “NMR Investigations of Nitrophorin 2 Belt Side Chain Effects on Heme Orientation and Seating of Native N-Terminus NP2 and NP2(D1A),” Berry, R. E.; Muthu, D.; Shokhireva, T. K.; Garrett, S. A.; Goren, A. M.; Zhang, H.; Walker, F. A. J. Biol. Inorg. Chem. 2014, 19, 577-593. (DOI: 10.1007/s00775-013-1063-8) PMID: 24292244.

174. “Dimerization of Nitrophorin 4 at Low pH: Comparison to the K1A Mutant of Nitrophorin 1,” Berry, R. E.; Yang, F.; Shokhireva, T. K.; Amoia, A.; Garrett, S. A.; Goren, A. M.; Korte, S. R.; Zhang, H.; Weichsel, A.; Montfort, W. R.; Walker, F. A. Submitted to Biochemistry

175. “NMR Studies of the Dynamics of High-Spin Nitrophorins: Comparative Studies of NP4 and NP2 at Close to Physiological pH,” Berry, R. E.; Muthu, D.; Yang, F.; Zhang, H.; Walker, F. A. Submitted to Biochemistry.

176. “The Spin States of the Aqua Complexes of Nitrophorins 2 and 4,” Berry, R. E.; Walker, F. A. To be submitted to Inorg. Chem.

177. “Distal Pocket and Belt Side Chain Effects on Structure, Midpoint Potential and Ligand Complex Stability of Nitrophorins 2 and 4 of Rhodnius prolixus,” Berry, R. E.; Amoia, A.; Weichsel, A.; Shokhirev, M. N.; Golden, W. J.; Shokhireva, T. K.; Zhang, H.; Montfort, W. R.; Walker, F. A. To be submitted to Biochemistry

E. Book Chapters

1. "NMR Studies of Paramagnetic Metalloporphyrins," La Mar, G. N.; Walker, F. A. In The Porphyrins, Vol. IV, D. Dolphin, Ed., (Academic Press, N.Y., 1979), pp. 61-157.

2. "Proton NMR Spectroscopy of Model Hemes," Walker, F. A.; Simonis, U. In Biological Magnetic Resonance, Vol. 12: NMR of Paramagnetic Molecules; Berliner, L. J.; Reuben, J., Eds.; Plenum Press: N.Y., 1993; pp. 133-274.

3. "Iron-Porphyrin Chemistry," Walker, F. A.; Simonis, U. In Encyclopedia of Inorganic Chemistry; King, R. B., Ed.; Wiley & Sons, Ltd.: Chichester, 1994; Vol. 4; pp. 1785-1846.

4. "Advances in Single- and Multidimensional NMR Spectroscopy of Paramagnetic Metal Complexes," Walker, F. A. In Spectroscopic Methods in Bioinorganic Chemistry; ACS Symposium Books; Solomon, E. I.; Hodgson, K., Eds.; American Chemical Society: Washington, D.C.; 1998, pp. 30-61.

5. "Novel NO-Releasing Heme Proteins from the Saliva of Blood-Sucking Insects," Walker, F. A.; Ribeiro, J. M. C.; Montfort, W. R. In Metals in Biological Systems, Vol. 36, Interrelations between Free Radicals and Metal Ions in Life Processes; Sigel, H.; Sigel A., Eds.; Marcel Dekker: New York, 1999; pp. 619-661.

6. "Magnetic Spectroscopic (EPR, ESEEM, Mössbauer, MCD, NMR) Studies of Low-Spin Ferriheme Centers and Their Corresponding Heme Proteins," Walker, F. A. Coord. Chem. Revs. 1999, pp. 471-534.

7. "NMR and EPR Spectroscopy of Paramagnetic Metalloporphyrins," Walker, F. A. In The Handbook of Porphyrins and Related Macrocycles; Kadish, K. M.; Guilard, R.; Smith, K. M., Eds.; Academic Press: Burlington, MA; 1999, Chapter 36, Vol. 5; pp. 81-183.

8. "Nitric Oxide-Releasing Heme Proteins from the Saliva of the Blood-Sucking Insect Rhodnius prolixus," Walker, F. A., Montfort, W. R. In Advances in Inorganic Chemistry; A. G. Mauk and G. Sykes, Eds.; Academic Press: San Diego, 2000; Vol. 51, Ch. 5, pp. 295-358.

9. "Reflections on My Life: Chemistry and Other Pleasures," Walker, F. A. In Chemworld (Korea), 2001, 41, 105-118.

10. "Pulsed EPR and NMR Spectroscopy of Paramagnetic Iron Porphyrins and Related Iron Macrocycles: How to Understand Patterns of Spin Delocalization and Recognize Macrocycle Radicals," Walker, F. A. Inorg. Chem. 2003, 42, 4526-4544.

11. "Models of the Bis-Histidine-Ligated Electron-Transferring Cytochromes. Comparative Geometric and Electronic Structure of Low-Spin Ferro- and Ferrihemes," Walker, F. A. (Invited). In Biomimetic Inorganic Chemistry; Holm, R. H., Solomon, E. I., Eds.; Chem. Revs. 2004, 104, 589-615.

12. "Electron Transfer by Diflavin Reductases," Murataliev, M. B.; Feyereisen, R.; Walker, F. A. (Invited). Biochim. Biophys. Acta 2004, 1698, 1-26.

13. “Nitric Oxide Interaction with Insect Nitrophorins, and Thoughts on the Electron Configuration of the {FeNO}6 Complex,” Walker, F. A. J. Inorg. Biochem. 2005, 99, 216-236.

14. “Iron Porphyrin Chemistry---A Ten-Year Update,” Walker, F. A.; Simonis, U. In Encyclopedia of Inorganic Chemistry; Ed. 2; King, R. B., Ed.; Wiley & Sons, Ltd.: Chichester; 2005; pp. 2390-2521.

15. “Iron Corrolates: Unambiguous Chloroiron(III) (Corrolate)2–• p-Cation Radicals,” Walker, F. A.; Licoccia, S.; Paolesse, R. J. Inorg. Biochem. 2006, 100, 810-837.

16. "Nitric Oxide Interaction with Insect Nitrophorins, and Possibilities for the Electron Configuration of the {FeNO}6 Complex," Walker, F. A. In: The Smallest Biomolecules: Diatomics and their Interactions with Heme Proteins, Ghosh, A., Ed.; Elsevier B. V.; 2008; pp. 378-428.

17. “Bis-Histidine-Coordinated Hemes in Four-Helix Bundles: How the Geometry of the Bundle Controls the Axial Imidazole Plane Orientations in Electron-Transferring Cytochromes of Mitochondrial Complexes II and III and Related Proteins,” Berry, E. A.; Walker, F. A. J. Biol. Inorg. Chem.2008, 13, 481-498.

18.  “Proton NMR and EPR Spectroscopy of Paramagnetic Metalloporphyrins and Heme Proteins,” Walker, F. A. In the Handbook of Porphyrin Science; Kadish, K. M.; Smith, K. M.; Guilard, R., Eds.; World Scientific: Hackensack NJ; 2010, Volume VIII, Chapter 5; pp. 0000-0000. 

19. “A Linear Correlation between 1H and Natural-Abundance 13C Chemical Shifts of Ferriheme Proteins and Model Ferrihemes,” Yang, F.; Shokhireva, T. K.; Walker, F. A. Inorg. Chem. 2011, 50, 1176-1183. (DOI: 10.1021/ic1020274) (Invited)

 

F. Published Conference Proceedings and Abstracts

1. "Thermodynamics of Axial Ligand Addition and Spectroscopic Trends of a Series of Symmetrical and Unsymmetrical Derivatives of Tetraphenylporphinatozinc(II) and -iron(III)." Walker, F. A.; McDermott, G. A.; Balke, V. L. Inorg. Chim. Acta 1983, 79, 92-93.

2. "The Effect of Hydrogen-Bonding of Amides on the Stability of Axial Ligand Complexes of Metalloporphyrins." Walker, F. A.; Balke, V. L.; West, J. T. Rev. Port. Quim. 1985, 27, 15-16.

3. "The Effect of Hindered Axial Ligand Rotation on the NMR Properties of Ortho-Substituted TPPFeL2+ Complexes," Simonis, U.; Walker, F. A. Bioinorg. Chem. 1989, 36, 268.

4. "Models of the Cytochromes b. Structural and Spectroscopic Investigations of Low-Spin Bis-Pocket Hemins." Walker, F. A.; Simonis, U.; Safo, M. K.; Scheidt, W. R. J. Inorg. Biochem. 1991, 43, 309.

5. One- and Two-Dimensional 1H NMR Studies of Model Heme Complexes with Short Relaxation Times T1 and T2," Simonis, U.; Walker, F. A. J. Inorg. Biochem. 1991, 43, 299.

6. "Elucidation of the Detailed Electronic Structures of Paramagnetic Model Hemes by Two-Dimensional NMR Techniques," Simonis, U.; Walker, F. A.; Lin, Q. J. Cell Biochem. 1993, 17C, 301.

7. "Cyclic Voltammetric Measurement of Reduction Potentials and Formation Constants for Complexes of Substituted Pyridines with Iron(III) and Iron(II) ‘Hindered’ Porphyrins," Nesset, M. J. M.; Wright, J. L.; Jacobson, S. E.; Walker, F. A. J. Inorg. Biochem. 1993, 51, 21.

8. "Pyridine Complexes of Iron(III) Tetramesitylporphyrin: Detailed NMR Studies," Watson, C. T.; Simonis, U.; Walker, F. A. J. Inorg. Biochem. 1993, 51, 131.

9. "1H and 13C NMR Spectroscopy of Paramagnetic Low-Spin Model Heme Complexes," Simonis, U.; Tan, H.; Walker, F. A. J. Inorg. Biochem. 1993, 51, 145.

10. "The Effect of Axial p-Acceptor Ligands in Iron(III) Porphyrinates. Characterization of the Low-Spin Derivative [Fe(TPP)(4-CNPy)2]ClO4, a Heme Complex with an Axial EPR Spectrum," Safo, M. K.; Raitsimring, A.; Walker, F. A.; Debrunner, P. G.; Scheidt, W. R. J. Inorg. Biochem. 1993, 51, 164.

11. "A Correlation Between Mössbauer Quadrupole Splittings and 57Fe NMR Chemical Shifts of Diamagnetic Iron(II) Porphyrinates," Walker, F. A.; Polam, J. R.; Wright, J. L.; Christensen, K. A.; Flint, H.; Winkler, H.; Grodzicki, M.; Trautwein, A. X. J. Inorg. Biochem. 1995, 59, 494.

12. NMR Studies of Electron Spin Relaxation, Magnetic Anisotropy, Hindered Ligand Rotation and Curie Behavior in some Novel Oxomolybdenum(V)/Iron(III) Porphyrinate Complexes," Basu, P.; Shokhirev, N. V.; Enemark, J. H.; Walker, F. A. J. Inorg. Biochem. 1995, 59, 479.

13. "Electronic Structure and Fluctional Distortion of Bis-Ligated Synthetic Porphyrins," Flint, H.; Trautwein, A. X.; Winkler, H.; Grodzicki, M.; Wright, J. L.; Polam, J. R.; Walker, F. A. J. Inorg. Biochem. 1995, 59, 493, and ICAME-95 Conference Proceedings 1995, 50, 839-842.

14. "NMR Spectroscopy of Paramagnetic Cyanide-Ligated Model Hemes: An Unambiguous Pyrrole Proton Resonance Assignment," Marquez, J.; Walker, F. A.; Simonis, U. J. Inorg. Biochem. 1995, 59, 511.

15. "Structural, Spectroscopic and Electrochemical Comparisons of Three of the Four Nitrophorins (NO-Releasing Heme Proteins) from the Saliva of the Blood-Sucking Insect, Rhodnius prolixus," Walker, F. A.; Andersen, J. F.; Weichsel, A.; Shokhireva, T. Kh.; Astashkin, A. V.; Ding, X. D.; Balfour, C.; Raitsimring, A. M.; Montfort, W. R. J. Inorg. Biochem. 1999, 74, 331.

16. "‘Proper Axis Systems’ of Low-Spin Ferrihemes: Are They Required, Or Simply Pleasing?" Walker, F. A.; Astashkin, A. V.; Raitsimring, A. M.; Shokhirev, N. V.; Shokhireva, T. Kh., Abstracts of ICPP-1 2000, SYM 194.

17."Pulsed EPR Spectroscopic Investigations of Low-Spin Ferrihemes and Related Macrocycles: New Insights Into the Electronic Ground States and Patterns of Spin Delocalization," Walker, F. A.; Astashkin, A. V.; Raitsimring, A. M. J. Inorg. Biochem. 2001, 86, 111.

18. "NMR and Pulsed ENDOR Evidence for Thermodynamic Stabilization of the dxy Electronic Ground State in Low-Spin Ferriheme Models of Heme Oxygenase: Implications for the Reactivity of the Iron(III) Hydroperoxide Intermediate," Rivera, M.; Caignan, G. A.; Astashkin, A. V.; Raitsimring, A. M.; Shokhireva, T. Kh.; Walker, F. A. J. Inorg. Biochem. 2001, 86, 474.

19. "Human Cytosolic Iron Regulatory Protein 1 Contains a Linear Iron-Sulfur Cluster," Gailer, J.; George, G. N.; Pickering, I. J.; Walker, F. A.; Winzerling, J. J. J. Inorg. Biochem. 2001, 86, 226.

20. "Mössbauer Spectroscopy with Synchrotron Radiation Applied to the Low-Spin Ferriheme Complex [TPPFe(NH2PzH)2]Cl," Schünemann, V.; Benda, R.; Herta, C.; Winkler, H.; Trautwein, A. X.; Shvyd’ko, Yu.; Walker, F. A. J. Inorg. Biochem. 2001, 86, 423.

21. “Nuclear Resonant Forward Scattering Using Synchrotron Radiation Applied to Study the Low-Spin Ferriheme Complex [TPPFe(NH 2PzH) 2]Cl,” Benda, R.; Herta, V.; Schünemann, V.; Trautwein, A. X.; Shvyd’ko, Yu.; Walker, F. A. Hyperfine Interact. C. 2002, 5, 269-272.

22. “NMR Investigations of the Four Nitrophorins from the Blood-Sucking Insect Rhodnius prolixus,” Walker, F. A.; Shokhireva, T. Kh.; Shokhirev, N. V. J. Inorg. Biochem. 2003, 96, 25.

23. “Correlation of Molecular Structure, EPR and Mössbauer Spectral Type and Reduction Potential in Low-Spin Ferriheme Models of the Cytochromes,” Walker, F. A.; Yatsunyk, L.; Carducci, M. D.; Teschner, T.; Schünemann, V.; Trautwein, A. X. J. Inorg. Biochem. 2003, 96, 248.

24. “Characterization of the Paramagnetic Complexes of Ferriheme Nitrophorin 7 and Relevant Mutants by 1H and 13C NMR Spectroscopy,” Yang, F.; Knipp, M.; Shokhireva, T. Kh.; Berry, R. E.; Zhang, H.; Walker, F. A., Conference Proceedings, 48 th ENC, March 2008.

25. “ A Single Mutation in Nitrophorins from Blood-sucking Insects Flips the Heme Orientation by 180° around the C meso -α–C meso -γ Axis,” Knipp, M.; Yang, F.; Berry, R. E.; Zhang, H.; Vašák, M.; Walker, F. A., Conference Proceedings, 9 th EUROBIC Conference Proceedings, September, 2008.

26.  “Heme Rotational Disorder – A Single Mutation in Nitrophorins 2 and 7 Turns the Heme b Cofactor,” Knipp, M.; Yang, F.; Shokhireva, T. K.; Berry, R. E.; He, C.; Zhang, H.; Walker, F. A. Conference Proceedings, 6th ICPP, Albuquerque, NM, July 4-9, 2010.

27.  “NMR Studies of the Dynamics of a NO-Releasing Protein from a New World Blood Sucking Insect,” Yang, F., Filippov, I., Jacobsen, N. E., Walker, F. A. Conference Proceedings, Joint EUROMAR 2010 and 17th ISMAR Conference, Florence, Italy, July 4-9, 2010.