Protein-derived cofactors revisited: Empowering amino acid residues with new functions

VL Davidson - Biochemistry, 2018 - ACS Publications
A protein-derived cofactor is a catalytic or redox-active site in a protein that is formed by post-
translational modification of one or more amino acid residues. These post-translational …

A widely distributed diheme enzyme from Burkholderia that displays an atypically stable bis-Fe(IV) state

K Rizzolo, SE Cohen, AC Weitz… - Nature …, 2019 - nature.com
Bacterial diheme peroxidases represent a diverse enzyme family with functions that range
from hydrogen peroxide (H2O2) reduction to post-translational modifications. By …

[HTML][HTML] Structural characterization of Neisseria gonorrhoeae bacterial peroxidase—Insights into the catalytic cycle of bacterial peroxidases

CS Nóbrega, AL Carvalho, MJ Romão… - International Journal of …, 2023 - mdpi.com
Neisseria gonorrhoeae is an obligate human pathogenic bacterium responsible for
gonorrhea, a sexually transmitted disease. The bacterial peroxidase, an enzyme present in …

Roles of multiple-proton transfer pathways and proton-coupled electron transfer in the reactivity of the bis-FeIV state of MauG

Z Ma, HR Williamson… - Proceedings of the …, 2015 - National Acad Sciences
The high-valent state of the diheme enzyme MauG exhibits charge–resonance (CR)
stabilization in which the major species is a bis-FeIV state with one heme present as FeIV …

Mechanism of protein oxidative damage that is coupled to long-range electron transfer to high-valent haems

Z Ma, HR Williamson, VL Davidson - Biochemical Journal, 2016 - portlandpress.com
In the absence of its substrate, the auto-reduction of the high-valent bis-Fe (IV) state of the
dihaem enzyme MauG is coupled to oxidative damage of a methionine residue. Transient …

MbnH is a diheme MauG-like protein associated with microbial copper homeostasis

GE Kenney, LMK Dassama, AC Manesis… - Journal of Biological …, 2019 - ASBMB
Methanobactins (Mbns) are ribosomally-produced, post-translationally modified peptidic
copper-binding natural products produced under conditions of copper limitation. Genes …

Functionally Distinct Bacterial Cytochrome c Peroxidases Proceed through a Common (Electro)catalytic Intermediate

KE Frato, KA Walsh, SJ Elliott - Biochemistry, 2016 - ACS Publications
The diheme cytochrome c peroxidase from Shewanella oneidensis (So CcP) requires a
single electron reduction to convert the oxidized, as-isolated enzyme to an active …

A suicide mutation affecting proton transfers to high-valent hemes causes inactivation of MauG during catalysis

Z Ma, HR Williamson, VL Davidson - Biochemistry, 2016 - ACS Publications
In the absence of its substrate, the autoreduction of the high-valent bis-FeIV state of the
hemes of MauG to the diferric state proceeds via a Compound I-like and then a Compound II …

A T67A mutation in the proximal pocket of the high-spin heme of MauG stabilizes formation of a mixed-valent FeII/FeIII state and enhances charge resonance …

S Shin, M Feng, C Li, HR Williamson, M Choi… - … et Biophysica Acta (BBA …, 2015 - Elsevier
The diheme enzyme MauG catalyzes a six-electron oxidation required for posttranslational
modification of a precursor of methylamine dehydrogenase (preMADH) to complete the …

Properties of the high‐spin heme of MauG are altered by binding of preMADH at the protein surface 40 Å away

M Feng, Z Ma, BF Crudup, VL Davidson - FEBS letters, 2017 - Wiley Online Library
The diheme enzyme MauG catalyzes oxidative post‐translational modifications of a protein
substrate, precursor protein of methylamine dehydrogenase (preMADH), that binds to the …