Why do bacteria use so many enzymes to scavenge hydrogen peroxide?

S Mishra, J Imlay - Archives of biochemistry and biophysics, 2012 - Elsevier
Hydrogen peroxide (H2O2) is continuously formed by the autoxidation of redox enzymes in
aerobic cells, and it also enters from the environment, where it can be generated both by …

Evolution of catalases from bacteria to humans

M Zamocky, PG Furtmüller, C Obinger - Antioxidants & redox …, 2008 - liebertpub.com
Excessive hydrogen peroxide is harmful for almost all cell components, so its rapid and
efficient removal is of essential importance for aerobically living organisms. Conversely …

Deciphering key features in protein structures with the new ENDscript server

X Robert, P Gouet - Nucleic acids research, 2014 - academic.oup.com
ENDscript 2 is a friendly Web server for extracting and rendering a comprehensive analysis
of primary to quaternary protein structure information in an automated way. This major …

Active and inhibited human catalase structures: ligand and NADPH binding and catalytic mechanism

CD Putnam, AS Arvai, Y Bourne, JA Tainer - Journal of molecular biology, 2000 - Elsevier
Human catalase is an heme-containing peroxisomal enzyme that breaks down hydrogen
peroxide to water and oxygen; it is implicated in ethanol metabolism, inflammation …

[HTML][HTML] Understanding the structure and function of catalases: clues from molecular evolution and in vitro mutagenesis

M Zámocký, F Koller - Progress in biophysics and molecular biology, 1999 - Elsevier
This review gives an overview about the structural organisation of different evolutionary lines
of all enzymes capable of efficient dismutation of hydrogen peroxide. Major potential …

Oxidation of methionine in proteins: roles in antioxidant defense and cellular regulation

RL Levine, J Moskovitz, ER Stadtman - IUBMB life, 2000 - Wiley Online Library
The roles of methionine residues in proteins have not been well defined, but a review of
available studies leads to the conclusion that methionine, like cysteine, functions as an …

Diversity of properties among catalases

J Switala, PC Loewen - Archives of biochemistry and biophysics, 2002 - Elsevier
Catalases from 16 different organisms including representatives from all three phylogenetic
clades were purified and characterized to provide a comparative picture of their respective …

Human catalase: looking for complete identity

MM Goyal, A Basak - Protein & cell, 2010 - Springer
Catalases are well studied enzymes that play critical roles in protecting cells against the
toxic effects of hydrogen peroxide. The ubiquity of the enzyme and the availability of …

Mechanisms of protection of catalase by NADPH: kinetics and stoichiometry

HN Kirkman, M Rolfo, AM Ferraris… - Journal of Biological …, 1999 - ASBMB
NADPH is known to be tightly bound to mammalian catalase and to offset the ability of the
substrate of catalase (H 2 O 2) to convert the enzyme to an inactive state (compound II). In …

Enzymology and structure of catalases

P Nicholls, I Fita, PC Loewen - 2000 - Elsevier
Catalases continue to present a challenge and are an object of interest to the biochemist
despite more than 100 years of study. More than 120 sequences, seven crystal structures …