Dr. Tatiana Shokhireva


Model Systems of Heme Proteins.

 S. Cai, T. K. Shokhireva, D. L. Lichtenberger, et al. NMR and EPR studies of chloroiron(III) tetraphenyl-chlorin and its complexes with imidazoles and pyridines of widely differing basicities  Inorg. Chem. 2006, 45 (9), 3519-3531.

R. Benda, V. Schuenemann,  A. X. Trautwein,  S.Cai,  J.Reddy Polam,  C. T. Watson, T.Kh. Shokhireva,  F.A.Walker. Models of the bis-histidine-coordinated ferricytochromes: Moessbauer and EPR spectroscopic studies of low-spin iron(III) tetrapyrroles of various electronic ground states and axial ligand orientations. Journal of Biological Inorganic Chemistry. 2003, 8, 787-801. 

M.Rivera , G.A.Caignan, A.V. Astashkin , A.M. Raitsimring , T.Kh. Shokhireva, F.A..Walker.  Models of the low-spin iron(III) hydroperoxide intermediate of heme oxygenase: magnetic resonance evidence for thermodynamic stabilization of the d(xy) electronic state at ambient temperatures. J Am Chem Soc. 2002, 124, 6077-89.

A.V. Astashkin,  A.M. Raitsimring, A.R.Kennedy,  T.Kh. Shokhireva,  F. A.Walker . Pulsed EPR Characterization of the Low-Spin Iron(III) Porphyrinate Complexes with Phenyl Isocyanide Ligands Having the dxy Orbital Ground State.   Journal of Physical Chemistry A. 2002, 106, 74-82. 

M. Rivera, G. A. Caignan, A.V. Astashkin, A. M. Raitsimring, T. Kh. Shokhireva, F. A. Walker.  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.  J. Inorg. Biochem. 2001, 86, 474.  

O. Q. Munro, J. A. Serth-Guzzo,  I.Turowska-Tyrk,  K. Mohanrao, T. Kh. Shokhireva, F. A. Walker, P. G. Debrunner, W.R. Scheidt.   Two Crystalline Forms of Low-Spin [Fe(TMP)(5-MeHIm)2]ClO4. Relative Parallel and Perpendicular Axial Ligand Orientations. Journal of the American Chemical Society. 2000, 122, 2144. 

M. J. M. Nesset, S. Cai, T.Kh. Shokhireva, N.V. Shokhirev, S.E.Jacobson, K.Jayaraj, A. Gold, F.A.Walker. Electronic Effects in Transition Metal Porphyrins. 10. Effect of Ortho Substituents on the Temperature Dependence of the NMR Spectra of a Series of Spin-Admixed Perchloratoiron(III) Tetrakis(2,6- or 2,4,6-phenyl substituted)porphyrinates. Inorganic Chemistry. 2000, 39, 532-540.

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

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

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

J. R. Polam, T. Kh. Shokhireva, Raffii, K., U. Simonis, F. A. Walker. Rates of Axial Ligand Rotation in Diamagnetic d6 Co(III) and Fe(II) Tetramesitylporphyrinates. Inorg. Chim. Acta. 1997, 263, 109-117. 

 N. V. Shokhirev, T. Kh. Shokhireva, J. R. Polam, C. T. Watson, K. Raffii, U. Simonis,  F. A. Walker. 2-D NMR Investigations of axial ligands in six-coordinate low-spin Iron(III) and Cobalt (III) tetraphenylporphyrinates having 2,6-phenyl substituents: Measurement of rate constant from 1H EXSY cross-peak intensities. J. Phys. Chem. A, 1997, 101, 2778-2786. 

A. M. Raitsimring, P. Borbat, T. Kh. Shokhireva, F. A. Walker. 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. J. Phys. Chem. 1996, 100, 5235-5244.

Biochemistry | Catalysis | Chemistry

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