Local charge distributions, electric dipole moments, and local electric fields influence reactivity patterns and guide regioselectivities in α-ketoglutarate-dependent non …

SP De Visser, G Mukherjee, HS Ali… - Accounts of chemical …, 2021 - ACS Publications
Conspectus Non-heme iron dioxygenases catalyze vital processes for human health related
to the biosynthesis of essential products and the biodegradation of toxic metabolites. Often …

Second‐coordination sphere effects on selectivity and specificity of heme and nonheme iron enzymes

SP de Visser - Chemistry–A European Journal, 2020 - Wiley Online Library
Mononuclear iron‐containing enzymes are highly versatile oxidants that often react
stereospecifically and/or regioselectively with substrates. Combined experimental and …

Substrate oxidation by cytochrome P450 enzymes

PR Ortiz de Montellano - Cytochrome P450: structure, mechanism, and …, 2015 - Springer
Cytochrome P450 enzymes catalyze a broad diversity of reactions, including well-
established transformations such as carbon and nitrogen hydroxylation, heteroatom …

Significantly shorter Fe–S bond in cytochrome P450-I is consistent with greater reactivity relative to chloroperoxidase

CM Krest, A Silakov, J Rittle, TH Yosca, EL Onderko… - Nature …, 2015 - nature.com
Abstract Cytochrome P450 (P450) and chloroperoxidase (CPO) are thiolate-ligated haem
proteins that catalyse the activation of carbon hydrogen bonds. The principal intermediate in …

Hydrogen‐Bonding Interactions Trigger a Spin‐Flip in Iron (III) Porphyrin Complexes

D Sahoo, MG Quesne, SP de Visser… - Angewandte …, 2015 - Wiley Online Library
A key step in cytochrome P450 catalysis includes the spin‐state crossing from low spin to
high spin upon substrate binding and subsequent reduction of the heme. Clearly, a weak …

Spectroscopic studies of the cytochrome P450 reaction mechanisms

PJ Mak, IG Denisov - Biochimica et Biophysica Acta (BBA)-Proteins and …, 2018 - Elsevier
The cytochrome P450 monooxygenases (P450s) are thiolate heme proteins that can, often
under physiological conditions, catalyze many distinct oxidative transformations on a wide …

Functional divergence of heme-thiolate proteins: a classification based on spectroscopic attributes

AT Smith, S Pazicni, KA Marvin, DJ Stevens… - Chemical …, 2015 - ACS Publications
1. INTRODUCTION Heme proteins are among the most versatile players in the biological
milieu; their functions range widely and include electron transfer, catalysis, and small …

Driving Force for Oxygen Atom Transfer by Heme-Thiolate Enzymes

X Wang, X Wang - A Novel Heme-Thiolate Peroxygenase AaeAPO and Its …, 2016 - Springer
The heme-thiolate peroxygenase Aae APO from Agrocybe aegerita is an important
biocatalyst and P450 analog. We have found that Aae APO compound I can be formed via …

Enhanced Reactivities of Iron (IV)‐Oxo Porphyrin Species in Oxidation Reactions Promoted by Intramolecular Hydrogen‐Bonding

Z Gong, L Wang, Y Xu, D Xie, X Qi, W Nam… - Advanced …, 2024 - Wiley Online Library
High‐valent iron‐oxo species are one of the common intermediates in both biological and
biomimetic catalytic oxidation reactions. Recently, hydrogen‐bonding (H‐bonding) has been …

Role of the proximal cysteine hydrogen bonding interaction in cytochrome P450 2B4 studied by cryoreduction, electron paramagnetic resonance, and electron …

R Davydov, S Im, M Shanmugam, WA Gunderson… - Biochemistry, 2016 - ACS Publications
Crystallographic studies have shown that the F429H mutation of cytochrome P450 2B4
introduces an H-bond between His429 and the proximal thiolate ligand, Cys436, without …