ArticleJournal of industrial microbiology & biotechnology2017
Heterologous expression of a β-D-glucosidase in Caldicellulosiruptor bescii has a surprisingly modest effect on the activity of the exoproteome and growth on crystalline cellulose.
Article in Journal of industrial microbiology & biotechnology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 8 citations in OpenAlex.
- A highly conserved ABC transporter mediates cello-oligosaccharide uptake in the extremely thermophilic, lignocellulolytic bacteriumApplied and environmental microbiology · 2026Article
- Current models in bacterial hemicellulase-encoding gene regulation.Applied microbiology and biotechnology · 2024Review
- Insights into Thermophilic Plant Biomass Hydrolysis fromMicroorganisms · 2020Review
- The biology and biotechnology of the genus Caldicellulosiruptor: recent developments in 'Caldi World'.Extremophiles : life under extreme conditions · 2020Review
- Genomic and physiological analyses reveal that extremely thermophilic Caldicellulosiruptor changbaiensis deploys uncommon cellulose attachment mechanisms.Journal of industrial microbiology & biotechnology · 2019Article
- Heterologous co-expression of two β-glucanases and a cellobiose phosphorylase resulted in a significant increase in the cellulolytic activity of the Caldicellulosiruptor bescii exoproteome.Journal of industrial microbiology & biotechnology · 2019Article
- Expression of a Cellobiose Phosphorylase from Thermotoga maritima in Caldicellulosiruptor bescii Improves the Phosphorolytic Pathway and Results in a Dramatic Increase in Cellulolytic Activity.Applied and environmental microbiology · 2018Article
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5 authors at 2 institutions in 1 country.
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Abstract
Members of the genus Caldicellulosiruptor are the most thermophilic cellulolytic bacteria so far described and are capable of efficiently utilizing complex lignocellulosic biomass without conventional pretreatment. Previous studies have shown that accumulation of high concentrations of cellobiose and, to a lesser extent, cellotriose, inhibits cellulase activity both in vivo and in vitro and high concentrations of cellobiose are present in C. bescii fermentations after 90 h of incubation. For some cellulolytic microorganisms, β-D-glucosidase is essential for the efficient utilization of cellobiose as a carbon source and is an essential enzyme in commercial preparations for efficient deconstruction of plant biomass. In spite of its ability to grow efficiently on crystalline cellulose, no extracellular β-D-glucosidase or its GH1 catalytic domain could be identified in the C. bescii genome. To investigate whether the addition of a secreted β-D-glucosidase would improve growth and cellulose utilization by C. bescii, we cloned and expressed a thermostable β-D-glucosidase from Acidothermus cellulolyticus (Acel_0133) in C. bescii using the CelA signal sequence for protein export. The effect of this addition was modest, suggesting that β-D-glucosidase is not rate limiting for cellulose deconstruction and utilization by C. bescii.
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