High activity CAZyme cassette for improving biomass degradation in thermophiles
Abstract
Currently, Thermophilic microorganisms and their enzymes offer several advantages for industrial application over their mesophilic counterparts. For example, a hyperthermophilic anaerobe, Caldicellulosiruptor bescii, was recently isolated from hot springs in Kamchatka, Siberia, and shown to have very high cellulolytic activity. Additionally, it is one of a few microorganisms being considered as viable candidates for consolidated bioprocessing applications. Moreover, C. bescii is capable of deconstructing plant biomass without enzymatic or chemical pretreatment. This ability is accomplished by the production and secretion of free, multi-modular and multi-functional enzymes, one of which, CbCel9A/Cel48A also secretion of free, multi-modular and multi-functional enzymes, one of which, CbCel9A/Cel48A also known as CelA, is able to outperform enzymes found in commercial enzyme preparations. Furthermore, the complete C. bescii exoproteome is extremely thermostable and highly active at elevated temperatures, unlike commercial fungal cellulases. Understanding the functional diversity of enzymes in the C. bescii exoproteome and how inter-molecular synergy between them confers C. bescii with its high cellulolytic activity is an important endeavor to enable the production more efficient biomass degrading enzyme formulations and in turn, better cellulolytic industrial microorganisms. We found that the combination of three or four of the most highly expressed enzymes in the C. besciimore »
- Authors:
- Publication Date:
- Research Org.:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Biological and Environmental Research (BER); King Mongkut’s Univ. of Technology Thonburi (KMUTT), Bangkok (Thailand)
- OSTI Identifier:
- 1618733
- Alternate Identifier(s):
- OSTI ID: 1424574
- Report Number(s):
- NREL/JA-2700-70440
Journal ID: ISSN 1754-6834; 22; PII: 1014
- Grant/Contract Number:
- AC36-08GO28308
- Resource Type:
- Published Article
- Journal Name:
- Biotechnology for Biofuels
- Additional Journal Information:
- Journal Name: Biotechnology for Biofuels Journal Volume: 11 Journal Issue: 1; Journal ID: ISSN 1754-6834
- Publisher:
- Springer Science + Business Media
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 09 BIOMASS FUELS; biofuels; biomass degrading enzymes; cellulose; biomass; thermophile; Caldicellulosiruptor bescii; anaerobe
Citation Formats
Brunecky, Roman, Chung, Daehwan, Sarai, Nicholas S., Hengge, Neal, Russell, Jordan F., Young, Jenna, Mittal, Ashutosh, Pason, Patthra, Vander Wall, Todd, Michener, William, Shollenberger, Todd, Westpheling, Janet, Himmel, Michael E., and Bomble, Yannick J. High activity CAZyme cassette for improving biomass degradation in thermophiles. Netherlands: N. p., 2018.
Web. doi:10.1186/s13068-018-1014-2.
Brunecky, Roman, Chung, Daehwan, Sarai, Nicholas S., Hengge, Neal, Russell, Jordan F., Young, Jenna, Mittal, Ashutosh, Pason, Patthra, Vander Wall, Todd, Michener, William, Shollenberger, Todd, Westpheling, Janet, Himmel, Michael E., & Bomble, Yannick J. High activity CAZyme cassette for improving biomass degradation in thermophiles. Netherlands. https://doi.org/10.1186/s13068-018-1014-2
Brunecky, Roman, Chung, Daehwan, Sarai, Nicholas S., Hengge, Neal, Russell, Jordan F., Young, Jenna, Mittal, Ashutosh, Pason, Patthra, Vander Wall, Todd, Michener, William, Shollenberger, Todd, Westpheling, Janet, Himmel, Michael E., and Bomble, Yannick J. Thu .
"High activity CAZyme cassette for improving biomass degradation in thermophiles". Netherlands. https://doi.org/10.1186/s13068-018-1014-2.
@article{osti_1618733,
title = {High activity CAZyme cassette for improving biomass degradation in thermophiles},
author = {Brunecky, Roman and Chung, Daehwan and Sarai, Nicholas S. and Hengge, Neal and Russell, Jordan F. and Young, Jenna and Mittal, Ashutosh and Pason, Patthra and Vander Wall, Todd and Michener, William and Shollenberger, Todd and Westpheling, Janet and Himmel, Michael E. and Bomble, Yannick J.},
abstractNote = {Currently, Thermophilic microorganisms and their enzymes offer several advantages for industrial application over their mesophilic counterparts. For example, a hyperthermophilic anaerobe, Caldicellulosiruptor bescii, was recently isolated from hot springs in Kamchatka, Siberia, and shown to have very high cellulolytic activity. Additionally, it is one of a few microorganisms being considered as viable candidates for consolidated bioprocessing applications. Moreover, C. bescii is capable of deconstructing plant biomass without enzymatic or chemical pretreatment. This ability is accomplished by the production and secretion of free, multi-modular and multi-functional enzymes, one of which, CbCel9A/Cel48A also secretion of free, multi-modular and multi-functional enzymes, one of which, CbCel9A/Cel48A also known as CelA, is able to outperform enzymes found in commercial enzyme preparations. Furthermore, the complete C. bescii exoproteome is extremely thermostable and highly active at elevated temperatures, unlike commercial fungal cellulases. Understanding the functional diversity of enzymes in the C. bescii exoproteome and how inter-molecular synergy between them confers C. bescii with its high cellulolytic activity is an important endeavor to enable the production more efficient biomass degrading enzyme formulations and in turn, better cellulolytic industrial microorganisms. We found that the combination of three or four of the most highly expressed enzymes in the C. bescii exoproteome exhibits such synergistic activity. For example, some discrete combinations of these enzymes mimic and even improve upon the activity of the exoproteome, even though some of the enzymes lack significant activity on their own. We have demonstrated that it is possible to replicate the cellulolytic activity of the native C. bescii exoproteome utilizing a minimal gene set, and that these minimal gene sets are more active than the whole exoproteome. In the future, this may lead to more simplified and efficient cellulolytic enzyme preparations or yield improvements when these enzymes are expressed in microorganisms engineered for consolidated bioprocessing.},
doi = {10.1186/s13068-018-1014-2},
journal = {Biotechnology for Biofuels},
number = 1,
volume = 11,
place = {Netherlands},
year = {Thu Feb 01 00:00:00 EST 2018},
month = {Thu Feb 01 00:00:00 EST 2018}
}
https://doi.org/10.1186/s13068-018-1014-2
Web of Science
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