Open AccessArabinose-Induced Catabolite Repression as a Mechanism for Pentose Hierarchy Control in Clostridium acetobutylicum ATCC 824
Author(s) -
Matthew D. Servinsky,
Rebecca L. Renberg,
Matthew Perisin,
Elliot S. Gerlach,
Sanchao Liu,
Christian Sund
Publication year - 2018
Publication title -
msystems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.931
H-Index - 39
ISSN - 2379-5077
DOI - 10.1128/msystems.00064-18
Subject(s) - clostridium acetobutylicum , catabolite repression , synthetic biology , commodity chemicals , metabolic engineering , biochemistry , bioprocess , arabinose , biology , chemistry , gene , biochemical engineering , fermentation , microbiology and biotechnology , computational biology , butanol , xylose , ethanol , mutant , engineering , catalysis , paleontology
Clostridium acetobutylicum can ferment a wide variety of carbohydrates to the commodity chemicals acetone, butanol, and ethanol. Recent advances in genetic engineering have expanded the chemical production repertoire ofC. acetobutylicum using synthetic biology. Due to its natural properties and genetic engineering potential, this organism is a promising candidate for converting biomass-derived feedstocks containing carbohydrate mixtures to commodity chemicals via natural or engineered pathways. Understanding how this organism regulates its metabolism during growth on carbohydrate mixtures is imperative to enable control of synthetic gene circuits in order to optimize chemical production. The work presented here unveils a novel mechanism via transcriptional regulation by a predicted Crh that controls the hierarchy of carbohydrate utilization and is essential for guiding robust genetic engineering strategies for chemical production.