Expanding the catalytic landscape of metalloenzymes with lytic polysaccharide monooxygenases

A Munzone, VGH Eijsink, JG Berrin… - Nature Reviews …, 2024 - nature.com
Lytic polysaccharide monooxygenases (LPMOs) have an essential role in global carbon
cycle, industrial biomass processing and microbial pathogenicity by catalysing the oxidative …

Lytic polysaccharide monooxygenases: enzymes for controlled and site-specific Fenton-like chemistry

B Bissaro, VGH Eijsink - Essays in biochemistry, 2023 - portlandpress.com
The discovery of oxidative cleavage of glycosidic bonds by enzymes currently known as lytic
polysaccharide monooxygenases (LPMOs) has profoundly changed our current …

A conserved second sphere residue tunes copper site reactivity in lytic polysaccharide monooxygenases

KR Hall, C Joseph, I Ayuso-Fernández… - Journal of the …, 2023 - ACS Publications
Lytic polysaccharide monooxygenases (LPMOs) are powerful monocopper enzymes that
can activate strong C–H bonds through a mechanism that remains largely unknown. Herein …

Catalysis and Electron Transfer in De Novo Designed Metalloproteins

KJ Koebke, TBJ Pinter, WC Pitts, VL Pecoraro - Chemical reviews, 2022 - ACS Publications
One of the hallmark advances in our understanding of metalloprotein function is showcased
in our ability to design new, non-native, catalytically active protein scaffolds. This review …

Fenton-like Chemistry by a Copper(I) Complex and H2O2 Relevant to Enzyme Peroxygenase C–H Hydroxylation

B Kim, MT Brueggemeyer, WJ Transue… - Journal of the …, 2023 - ACS Publications
Lytic polysaccharide monooxygenases have received significant attention as catalytic
convertors of biomass to biofuel. Recent studies suggest that its peroxygenase activity (ie …

The “life-span” of lytic polysaccharide monooxygenases (LPMOs) correlates to the number of turnovers in the reductant peroxidase reaction

S Kuusk, VGH Eijsink, P Väljamäe - Journal of Biological Chemistry, 2023 - jbc.org
Lytic polysaccharide monooxygenases (LPMOs) are monocopper enzymes that degrade the
insoluble crystalline polysaccharides cellulose and chitin. Besides the H 2 O 2 cosubstrate …

Deciphering the oxygen activation mechanism at the CuC site of particulate methane monooxygenase

W Peng, X Qu, S Shaik, B Wang - Nature Catalysis, 2021 - nature.com
The enzymatic oxidation of methane to methanol was discovered in methanotrophs over 110
years ago. Nevertheless, the mechanism of action of particulate methane monooxygenase …

Functional and protective hole hop** in metalloenzymes

HB Gray, JR Winkler - Chemical Science, 2021 - pubs.rsc.org
Electrons can tunnel through proteins in microseconds with a modest release of free energy
over distances in the 15 to 20 Å range. To span greater distances, or to move faster, multiple …

Mutational dissection of a hole hop** route in a lytic polysaccharide monooxygenase (LPMO)

I Ayuso-Fernández, TZ Emrich-Mills, J Haak… - Nature …, 2024 - nature.com
Oxidoreductases have evolved tyrosine/tryptophan pathways that channel highly oxidizing
holes away from the active site to avoid damage. Here we dissect such a pathway in a …

Kinetic analysis of amino acid radicals formed in H2O2-driven CuI LPMO reoxidation implicates dominant homolytic reactivity

SM Jones, WJ Transue, KK Meier, B Kelemen… - Proceedings of the …, 2020 - pnas.org
Lytic polysaccharide monooxygenases (LPMOs) have been proposed to react with both O 2
and H 2 O 2 as cosubstrates. In this study, the H 2 O 2 reaction with reduced Hypocrea …