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Title: Expression of the Acidothermus cellulolyticus E1 endoglucanase in Caldicellulosiruptor bescii enhances its ability to deconstruct crystalline cellulose

Abstract

The Caldicellulosiruptor bescii genome encodes a potent set of carbohydrate-active enzymes (CAZymes), found primarily as multi-domain enzymes that exhibit high cellulolytic and hemicellulolytic activity on and allow utilization of a broad range of substrates, including plant biomass without conventional pretreatment. CelA, the most abundant cellulase in the C. bescii secretome, uniquely combines a GH9 endoglucanase and a GH48 exoglucanase in one protein. The most effective commercial enzyme cocktails used in vitro to pretreat biomass are derived from fungal cellulases (cellobiohydrolases, endoglucanases and a β-d-glucosidases) that act synergistically to release sugars for microbial conversion. The C. bescii genome contains six GH5 domains in five different open reading frames. Four exist in multi-domain proteins and two as single catalytic domains. E1 is a GH5 endoglucanase reported to have high specific activity and simple architecture and is active at the growth temperature of C. bescii. E1 is an endo-1,4-β-glucanase linked to a family 2 carbohydrate-binding module shown to bind primarily to cellulosic substrates. As a result, we tested if the addition of this protein to the C. bescii secretome would improve its cellulolytic activity.

Authors:
 [1];  [1];  [1];  [2];  [2];  [2];  [1]
  1. Univ. of Georgia, Athens, GA (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1225358
Report Number(s):
NREL/JA-2700-65047
Journal ID: ISSN 1754-6834
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Biotechnology for Biofuels
Additional Journal Information:
Journal Volume: 8; Journal Issue: 1; Related Information: Biotechnology for Biofuels; Journal ID: ISSN 1754-6834
Publisher:
BioMed Central
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANAYLYTICAL CHEMISTRY; crystalline cellulose; acidothermus cellulolyticus e1 endoglucanase

Citation Formats

Chung, Daehwan, Young, Jenna, Cha, Minseok, Brunecky, Roman, Bomble, Yannick J., Himmel, Michael E., and Westpheling, Janet. Expression of the Acidothermus cellulolyticus E1 endoglucanase in Caldicellulosiruptor bescii enhances its ability to deconstruct crystalline cellulose. United States: N. p., 2015. Web. https://doi.org/10.1186/s13068-015-0296-x.
Chung, Daehwan, Young, Jenna, Cha, Minseok, Brunecky, Roman, Bomble, Yannick J., Himmel, Michael E., & Westpheling, Janet. Expression of the Acidothermus cellulolyticus E1 endoglucanase in Caldicellulosiruptor bescii enhances its ability to deconstruct crystalline cellulose. United States. https://doi.org/10.1186/s13068-015-0296-x
Chung, Daehwan, Young, Jenna, Cha, Minseok, Brunecky, Roman, Bomble, Yannick J., Himmel, Michael E., and Westpheling, Janet. Thu . "Expression of the Acidothermus cellulolyticus E1 endoglucanase in Caldicellulosiruptor bescii enhances its ability to deconstruct crystalline cellulose". United States. https://doi.org/10.1186/s13068-015-0296-x. https://www.osti.gov/servlets/purl/1225358.
@article{osti_1225358,
title = {Expression of the Acidothermus cellulolyticus E1 endoglucanase in Caldicellulosiruptor bescii enhances its ability to deconstruct crystalline cellulose},
author = {Chung, Daehwan and Young, Jenna and Cha, Minseok and Brunecky, Roman and Bomble, Yannick J. and Himmel, Michael E. and Westpheling, Janet},
abstractNote = {The Caldicellulosiruptor bescii genome encodes a potent set of carbohydrate-active enzymes (CAZymes), found primarily as multi-domain enzymes that exhibit high cellulolytic and hemicellulolytic activity on and allow utilization of a broad range of substrates, including plant biomass without conventional pretreatment. CelA, the most abundant cellulase in the C. bescii secretome, uniquely combines a GH9 endoglucanase and a GH48 exoglucanase in one protein. The most effective commercial enzyme cocktails used in vitro to pretreat biomass are derived from fungal cellulases (cellobiohydrolases, endoglucanases and a β-d-glucosidases) that act synergistically to release sugars for microbial conversion. The C. bescii genome contains six GH5 domains in five different open reading frames. Four exist in multi-domain proteins and two as single catalytic domains. E1 is a GH5 endoglucanase reported to have high specific activity and simple architecture and is active at the growth temperature of C. bescii. E1 is an endo-1,4-β-glucanase linked to a family 2 carbohydrate-binding module shown to bind primarily to cellulosic substrates. As a result, we tested if the addition of this protein to the C. bescii secretome would improve its cellulolytic activity.},
doi = {10.1186/s13068-015-0296-x},
journal = {Biotechnology for Biofuels},
number = 1,
volume = 8,
place = {United States},
year = {2015},
month = {8}
}

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