期刊
MICROORGANISMS
卷 8, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/microorganisms8030385
关键词
Caldicellulosiruptor; extreme thermophile; genomics; thermostable enzymes; enzyme synergy; systems biology
类别
Plant polysaccharides continue to serve as a promising feedstock for bioproduct fermentation. However, the recalcitrantnature of plant biomass requires certainkey enzymes, including cellobiohydrolases, for efficient solubilization of polysaccharides. Thermostable carbohydrate-active enzymes are sought for their stability and tolerance to other process parameters. Plant biomass degrading microbes found in biotopes like geothermally heated water sources, compost piles, and thermophilic digesters are a common source of thermostable enzymes. While traditional thermophilic enzyme discovery first focused on microbe isolation followed by functional characterization, metagenomic sequences are negating the initial need for species isolation. Here, we summarize the current state of knowledge about the extremely thermophilic genus Caldicellulosiruptor, including genomic and metagenomic analyses in addition to recent breakthroughs in enzymology and genetic manipulation of the genus. Ten years after completing the first Caldicellulosiruptor genome sequence, the tools required for systems biology of this non-model environmental microorganism are in place.
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