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List of works by F. Ann Walker

1H NMR study of the solution molecular and electronic structure of Escherichia coli ferricytochrome b562: evidence for S = 1/2 in equilibrium S = 5/2 spin equilibrium for intact His/Met ligation.

scientific article

1H and 13C NMR spectroscopic studies of the ferriheme resonances of three low-spin complexes of wild-type nitrophorin 2 and nitrophorin 2(V24E) as a function of pH.

scientific article

Analysis of the Temperature Dependence of the1H and13C Isotropic Shifts of Horse Heart Ferricytochromec: Explanation of Curie and Anti-Curie Temperature Dependence and Nonlinear Pseudocontact Shifts in a Common Two-Level Framework

scientific article published in 1998

Assignment of Ferriheme Resonances for High- and Low-Spin Forms of Nitrophorin 3 by H and C NMR Spectroscopy and Comparison to Nitrophorin 2: Heme Pocket Structural Similarities and Differences.

scientific article published on March 2008

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

scientific article published in January 2003

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 Rhodnius prolixus ⬇️

scientific article published on June 19, 2012

Assignment of the Ferriheme Resonances of the Low-Spin Complexes of Nitrophorins 1 and 4 by 1 H and 13 C NMR Spectroscopy:  Comparison to Structural Data Obtained from X-ray Crystallography

scientific article

Assignment of the ferriheme resonances of 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

scientific article published on 6 May 2008

Assignment of the ferriheme resonances of the high-spin forms of nitrophorins 1 and 4 by 1H NMR spectroscopy: comparison to structural data obtained from X-ray crystallography

scientific article

Axial ligand complexes of the Rhodnius nitrophorins: reduction potentials, binding constants, EPR spectra, and structures of the 4-iodopyrazole and imidazole complexes of NP4

scientific article

Bis-histidine-coordinated hemes in four-helix bundles: how the geometry of the bundle controls the axial imidazole plane orientations in transmembrane cytochromes of mitochondrial complexes II and III and related proteins

scientific article

Cation-promoted cyclic voltammetry of recombinant rat outer mitochondrial membrane cytochrome b5 at a gold electrode modified with beta-mercaptopropionic acid

scientific article published on 01 March 1994

Characterization of the copper(II) binding site in the pink copper binding protein CusF by electron paramagnetic resonance spectroscopy.

scientific article

Characterization of the mixed axial ligand complex (4-cyanopyridine)(imidazole)(tetramesitylporphinato)iron(iii) perchlorate. Stabilization by synergic bonding

scientific article published on January 2016

Chimeragenesis of the fatty acid binding site of cytochrome P450BM3. Replacement of residues 73-84 with the homologous residues from the insect cytochrome P450 CYP4C7.

scientific article published in February 2004

Chloroiron meso-triphenylcorrolates: electronic ground state and spin delocalization

Crystal structures of a nitric oxide transport protein from a blood-sucking insect

scientific article published on April 1, 1998

Cyanide complexes of iron corrolates: spin delocalization and autoreduction

scientific article published in November 2001

De novo design and molecular assembly of a transmembrane diporphyrin-binding protein complex.

scientific article published on November 2010

Determination of the principal g-values of Type I or highly-anisotropic low spin (HALS) ferriheme centers in frozen solutions

scientific article

Dimerization of nitrophorin 4 at low pH and comparison to the K1A mutant of nitrophorin 1

scientific article

Drosophila melanogaster CYP6A8, an insect P450 that catalyzes lauric acid (omega-1)-hydroxylation

scientific article published on December 2004

Dynamics of axial ligation in metalloporphyrins. I. Imidazole exchange in low-spin ferric porphyrins

scientific article published on 01 November 1972

Effect of Mutation of Carboxyl Side-Chain Amino Acids Near the Heme on the Midpoint Potentials and Ligand Binding Constants of Nitrophorin 2 and Its NO, Histamine, and Imidazole Complexes

scientific article

Effect of heme orientation on the reduction potential of cytochrome b5 ⬇️

scientific article published on 01 August 1988

Effect of the N-terminus on heme cavity structure, ligand equilibrium, rate constants, and reduction potentials of nitrophorin 2 from Rhodnius prolixus

scientific article published on 17 May 2007

Effects of the XYY karyotype in one of two brothers with congenital adrenal hyperplasia ⬇️

scientific article published on January 1, 1972

Electrochemical and NMR spectroscopic studies of distal pocket mutants of nitrophorin 2: stability, structure, and dynamics of axial ligand complexes

scholarly article

Electron spin density on the axial His ligand of high-spin and low-spin nitrophorin 2 probed by heteronuclear NMR spectroscopy

scientific article published on 17 January 2013

Electron transfer by diflavin reductases.

scientific article published on April 2004

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

scientific article published on 01 February 2000

Electronic effects in transition metal porphyrins. 2. The sensitivity of redox and ligand addition reactions in para-substituted tetraphenylporphyrin complexes of cobalt (II)

scientific article published on 01 June 1976

Fe L- and K-edge XAS of low-spin ferric corrole: bonding and reactivity relative to low-spin ferric porphyrin

scientific article published on February 2009

Fe L-edge X-ray absorption spectroscopy of low-spin heme relative to non-heme Fe complexes: delocalization of Fe d-electrons into the porphyrin ligand

scientific article

Gene synthesis, bacterial expression, and 1H NMR spectroscopic studies of the rat outer mitochondrial membrane cytochrome b5

scientific article (publication date: 8 December 1992)

Heme methyl 1H chemical shifts as structural parameters in some low-spin ferriheme proteins

scientific article published in August 1999

Heme-assisted S-nitrosation of a proximal thiolate in a nitric oxide transport protein

scientific article

High affinity histamine-binding and antihistaminic activity of the salivary nitric oxide-carrying heme protein (nitrophorin) of Rhodnius prolixus.

scientific article

Human Cytosolic Iron Regulatory Protein 1 Contains a Linear Iron−Sulfur Cluster

scientific article published on 01 October 2001

Influence of heme vinyl- and carboxylate-protein contacts on structure and redox properties of bovine cytochrome b5

scientific article published in 1991

Iron corrolates: unambiguous chloroiron(III) (corrolate)(2-.) pi-cation radicals.

scientific article

Is the corrolate macrocycle innocent or noninnocent? Magnetic susceptibility, Mössbauer, 1H NMR, and DFT investigations of chloro- and phenyliron corrolates

scientific article published in June 2002

Kinetics of ring inversion in strongly nonplanar iron(III) octaalkyltetraphenylporphyrinates

scientific article published in April 2005

Leghemoglobin green derivatives with nitrated hemes evidence production of highly reactive nitrogen species during aging of legume nodules

scientific article published on 30 January 2012

Ligand-induced heme ruffling and bent no geometry in ultra-high-resolution structures of nitrophorin 4

scientific article

Linear correlation between 1H and 13C chemical shifts of ferriheme proteins and model ferrihemes

scientific article

Low-spin ferriheme models of the cytochromes: correlation of molecular structure with EPR spectral type

scientific article published in December 2003

Magnetic resonance and structural investigations of (monooxooctaethylchlorinato)iron(III) chloride and its bis(imidazole) complex

scientific article published on 01 March 2005

Magnetic resonance spectroscopic investigations of the electronic ground and excited states in strongly nonplanar iron(III) dodecasubstituted porphyrins

scientific article published in April 2005

Models of the bis-histidine-coordinated ferricytochromes: Mössbauer and EPR spectroscopic studies of low-spin iron(III) tetrapyrroles of various electronic ground states and axial ligand orientations

scientific article published in August 2003

Models of the bis-histidine-ligated electron-transferring cytochromes. Comparative geometric and electronic structure of low-spin ferro- and ferrihemes

scientific article published on February 2004

Models of the cytochromes: crystal structures and EPR spectral characterization of low-spin bis-imidazole complexes of (OETPP)Fe(III) having intermediate ligand plane dihedral angles

scientific article published on 01 July 2006

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

scientific article published in May 2002

Models of the membrane-bound cytochromes: mössbauer spectra of crystalline low-spin ferriheme complexes having axial ligand plane dihedral angles ranging from 0 degree to 90 degrees

scientific article

NMR and EPR spectroscopic and structural studies of low-spin, (d(xz),d(y)(z))(4)(d(x)(y))(1) ground state Fe(III) bis-tert-butylisocyanide complexes of dodecasubstituted porphyrins

scientific article published in July 2004

NMR and EPR studies of chloroiron(III) tetraphenyl-chlorin and its complexes with imidazoles and pyridines of widely differing basicities

scientific article published on May 2006

NMR and EPR studies of low-spin Fe(III) complexes of meso-tetra-(2,6-disubstituted phenyl)porphyrinates complexed to imidazoles and pyridines of widely differing basicities

scientific article

NMR and EPR studies of the bis(pyridine) and bis(tert-butyl isocyanide) complexes of iron(III) octaethylchlorin

scientific article

NMR and structural investigations of a nonplanar iron corrolate: modified patterns of spin delocalization and coupling in a slightly saddled chloroiron(III) corrolate radical

scientific article published in October 2005

NMR investigations of nitrophorin 2 belt side chain effects on heme orientation and seating of native N-terminus NP2 and NP2(D1A).

scientific article

NMR studies of nitrophorin distal pocket side chain effects on the heme orientation and seating of NP2 as compared to NP1.

scientific article

NMR studies of the dynamics of high-spin nitrophorins: comparative studies of NP4 and NP2 at close to physiological pH

scientific article

NMR studies of the dynamics of nitrophorin 2 bound to nitric oxide.

scientific article

Native N-terminus nitrophorin 2 from the kissing bug: similarities to and differences from NP2(D1A).

scientific article

Nitric oxide heme interactions in nitrophorin from Cimex lectularius

Nitric oxide interaction with insect nitrophorins and thoughts on the electron configuration of the {FeNO}6 complex

scientific article

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

scientific article

Overexpression in Escherichia coli and functional reconstitution of the liposome binding ferriheme protein nitrophorin 7 from the bloodsucking bug Rhodnius prolixus

scientific article

Oxidation and Loss of Heme in Soluble Guanylyl Cyclase from Manduca sexta ⬇️

scientific article published on June 10, 2011

Oxomolybdenum(V)/Iron(III) Porphyrinate Complexes: Effect of Axial Ligand Plane Orientation on Complex Stability, Reduction Potential, and NMR and EPR Spectra

scientific article published on 01 March 1997

P450 reductase and cytochrome b5 interactions with cytochrome P450: effects on house fly CYP6A1 catalysis

scientific article published on 27 September 2008

Proton NMR Investigations of Intermediate Spin Iron(III) Complexes with Macrocyclic N42-Chelate Ligands

Proton nuclear magnetic resonance studies of high-spin manganese(III) complexes with synthetic porphyrins

scientific article published on 01 September 1975

Pulsed EPR and NMR spectroscopy of paramagnetic iron porphyrinates and related iron macrocycles: how to understand patterns of spin delocalization and recognize macrocycle radicals

scientific article

Scanning chimeragenesis: the approach used to change the substrate selectivity of fatty acid monooxygenase CYP102A1 to that of terpene omega-hydroxylase CYP4C7.

scientific article published on 30 August 2009

Solution NMR Studies of Iron(II) Spin-Crossover Complexes

scientific article published on 13 July 2007

Spectroscopic and functional characterization of nitrophorin 7 from the blood-feeding insect Rhodnius prolixus reveals an important role of its isoform-specific N-terminus for proper protein function

scientific article

Steric and electronic effeccts in the coordination of amines to a cobalt(II) porphyrin ⬇️

scientific article published on February 21, 1973

Structural, NMR, and EPR studies of S = (1)/(2) and S = (3)/(2) Fe(III) bis(4-cyanopyridine) complexes of dodecasubstituted porphyrins

scientific article

Structure and stability effects of the mutation of glycine 34 to serine in Rhodobacter capsulatus cytochrome c(2)

scientific article published on 01 April 2000

Structure and stereochemistry of products of hydroxylation of human steroid hormones by a housefly cytochrome P450 (CYP6A1).

scientific article published in April 2006

The effect of mutation of F87 on the properties of CYP102A1-CYP4C7 chimeras: altered regiospecificity and substrate selectivity

scientific article

The heme environment of mouse neuroglobin: histidine imidazole plane orientations obtained from solution NMR and EPR spectroscopy as compared with X-ray crystallography

scientific article

Trans-disubstituted tetraarylporphyrin as a precursor to larger molecular architectures: an application of MacDonald "2 + 2" porphyrin synthesis in aqueous anionic surfactant

scientific article published on 01 October 2001

Tyrosine triad at the interface between the Rieske iron-sulfur protein, cytochrome c1 and cytochrome c2 in the bc1 complex of Rhodobacter capsulatus.

scientific article published on 28 January 2012

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

scientific article published on October 2010

pH-dependent mechanism of nitric oxide release in nitrophorins 2 and 4

scientific article published on January 2009

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