Organisms use diverse mechanisms involving multiple complementary enzymes, particularly glycoside hydrolases (GHs), to deconstruct lignocellulose. Lytic polysaccharide monooxygenases (LPMOs) produced by bacteria and fungi facilitate deconstruction as does the Fenton chemistry of brown-rot fungi. Lignin depolymerisation is achieved by white-rot fungi and certain bacteria, using peroxidases and laccases. Meta-omics is now revealing the complexity of prokaryotic degradative activity in lignocellulose-rich environments. Protists from termite guts and some oomycetes produce multiple lignocellulolytic enzymes. Lignocellulose-consuming animals secrete some GHs, but most harbour a diverse enzyme-secreting gut microflora in a mutualism that is particularly complex in termites. Shipworms however, house GH-secreting and LPMO-secreting bacteria separate from the site of digestion and the isopod Limnoria relies on endogenous enzymes alone. The omics revolution is identifying many novel enzymes and paradigms for biomass deconstruction, but more emphasis on function is required, particularly for enzyme cocktails, in which LPMOs may play an important role.
Lignocellulose degradation mechanisms across the Tree of Life
S. Cragg,G. Beckham,N. Bruce,T. Bugg,D. Distel,P. Dupree,A. Etxabe,B. Goodell,J. Jellison,J. McGeehan,S. McQueen-Mason,K. Schnorr,P. Walton,J. Watts,M. Zimmer
Published 2015 in Current Opinion in Chemical Biology
ABSTRACT
PUBLICATION RECORD
- Publication year
2015
- Venue
Current Opinion in Chemical Biology
- Publication date
2015-11-14
- Fields of study
Biology, Medicine, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
- Lignocellulose deconstruction across diverse organisms commonly relies on multiple complementary enzymes, especially glycoside hydrolases and lytic polysaccharide monooxygenases.박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review
CONCEPTS
- enzyme cocktails
Mixtures of enzymes acting together to deconstruct biomass, highlighted here as a functional framework for lignocellulose degradation.
Aliases: enzyme mixtures
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review - fenton chemistry
A radical-generating oxidative chemistry associated here with brown-rot fungal degradation of lignocellulose.
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review - glycoside hydrolases
Enzymes that hydrolyze glycosidic bonds in carbohydrate polymers and are central to polysaccharide breakdown in this review.
Aliases: GHs
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review - lignin depolymerisation
The breakdown of lignin polymer structure during wood and biomass decay as discussed in this review.
Aliases: lignin depolymerization
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review - lignocellulose
Plant biomass composed of cellulose, hemicellulose, and lignin that serves as the substrate for degradation in this review.
Aliases: lignocellulosic biomass
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review - lytic polysaccharide monooxygenases
Oxidative enzymes that cleave recalcitrant polysaccharides and are discussed here as key contributors to biomass deconstruction.
Aliases: LPMOs
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review - meta-omics
Genome-, transcriptome-, proteome-, and other omics-based approaches used here to study community-level degradative activity.
Aliases: metagenomics and related omics
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review - peroxidases and laccases
Oxidative enzymes that participate in lignin breakdown and are referenced here as major lignin-degrading activities.
Aliases: peroxidases, laccases
박진우 (dztg5apj7m) extractionAK (4715169a40) reviewB (s683577b42) review--------- ✂ Cut Here ✂ --------- (jqthcshryb) review
REFERENCES
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