Revisiting the nitrosyl complex of myoglobin by high-field pulse EPR spectroscopy and quantum mechanical calculations

M Radoul, M Sundararajan, A Potapov… - Physical Chemistry …, 2010 - pubs.rsc.org
The binding of NO to reduced myoglobin in solution results in the formation of two
paramagnetic nitrosyl myoglobin (MbNO) complexes: one with a rhombic g-factor and the …

[HTML][HTML] Proton electron nuclear double resonance from nitrosyl horse heart myoglobin: the role of His-E7 and Val-E11

M Flores, E Wajnberg, G Bemski - Biophysical journal, 2000 - cell.com
Electron nuclear double resonance (ENDOR) spectroscopy has been used to study protons
in nitrosyl horse heart myoglobin (MbNO). 1 H ENDOR spectra were recorded for different …

Resonance Raman investigation of Fe− N− O structure of nitrosylheme in myoglobin and its mutants

T Tomita, S Hirota, T Ogura, JS Olson… - The Journal of …, 1999 - ACS Publications
Resonance Raman spectra have been observed for NO adducts of wild-type (WT) sperm
whale myoglobin (MbNO) and its H64G, H64L, L29W, V68W, and V68T mutants at neutral …

1H NMR structure of the heme pocket of HNO-myoglobin

F Sulc, E Fleischer, PJ Farmer, D Ma… - JBIC Journal of Biological …, 2003 - Springer
The unique 1 H NMR signal of nitrosyl hydride at 14.8 ppm is used to obtain a solution
structure of the distal pocket of Mb-HNO, a rare nitroxyl adduct with a half-life of several …

Nitrite coordination in myoglobin

A Ioannou, A Lambrou, V Daskalakis… - Journal of Inorganic …, 2017 - Elsevier
The coordination of nitrite in myoglobin (Mb) has been characterized by resonance Raman
spectroscopy and the frequencies of the nitrite bound to the heme Fe as well to the 2-vinyl …

On the mode of hexacoordinated NO-binding to myo-and hemoglobin: Variable-temperature EPR studies at multiple microwave frequencies

PP Schmidt, R Kappl, J Hüttermann - Applied Magnetic Resonance, 2001 - Springer
Electron paramagnetic resonance (EPR) spectroscopy is performed on NO⋅-ligated hemo-
and myoglobin at temperatures between 5 and 300 K. Apart from the standard X-band (9.5 …

Nitrosyl Myoglobins and Their Nitrite Precursors: Crystal Structural and Quantum Mechanics and Molecular Mechanics Theoretical Investigations of Preferred FeNO …

B Wang, Y Shi, J Tejero, SM Powell, LM Thomas… - Biochemistry, 2018 - ACS Publications
The globular dioxygen binding heme protein myoglobin (Mb) is present in several species.
Its interactions with the simple nitrogen oxides, namely, nitric oxide (NO) and nitrite, have …

Identification of conformational substates involved in nitric oxide binding to ferric and ferrous myoglobin through difference Fourier transform infrared spectroscopy …

LM Miller, AJ Pedraza, MR Chance - Biochemistry, 1997 - ACS Publications
Hemeproteins play an important role in the signaling processes mediated by nitric oxide
(NO). For example, the production of NO by nitric oxide synthase, the activation of guanylate …

Detailed QM/MM study of the electron paramagnetic resonance parameters of nitrosyl myoglobin

M Sundararajan, F Neese - Journal of Chemical Theory and …, 2012 - ACS Publications
A number of popular density functionals are calibrated against high-resolution EPR data for
low spin iron-nitrosyls present in nitric oxide bound myoglobin. The model incorporates both …

Spin Crossover in Nitrito‐Myoglobin as Revealed by Resonance Raman Spectroscopy

A Lambrou, A Ioannou… - Chemistry–A European …, 2016 - Wiley Online Library
Abstract The myoglobin (Mb) heme Fe‐O‐N= O and heme Fe‐O‐N= O/2‐nitrovinyl species
have been characterized by resonance Raman spectroscopy. In the heme Fe‐O‐N= O …