PMID: 6538780Jan 1, 1984Paper

Sophorose induction of an intracellular b-glucosidase in Trichoderma

Archives of Microbiology
J R Loewenberg

Abstract

The disaccharide sophorose induces Trichoderma to increase a soluble intracellular b-glucosidase that hydrolyses cellobiose, sophorose, and p-nitrophenyl-b-D-glucopyranoside. Simultaneously, it depresses the activity of a similar insoluble enzyme that is associated with the mycelium. Gel electrophoresis indicates that a single enzyme is responsible for all the soluble intracellular b-glucosidase activity. Cycloheximide severely inhibits sophorose induction of this enzyme indicating that the increase in activity normally obtained with sophorose is due to the de novo formation of the enzyme. The same sugars that promote the formation and release of cellulase by Trichoderma induce an increase in the soluble intracellular b-glucosidase. A function of the soluble intracellular enzyme appears to be the hydrolysis of cellobiose, which would otherwise accumulate during cellulose degradation, and thus to prevent cellobiose inhibition of cellulase.

References

May 13, 1977·Archives of Microbiology·J R Loewenberg, C M Chapman
Feb 6, 1973·Histochemie. Histochemistry. Histochimie·R Gossrau
Sep 1, 1971·Journal of Biochemistry·T NisizawaK Nisizawa
Jan 1, 1982·The International Journal of Biochemistry·J G Shewale
Dec 1, 1964·Analytical Biochemistry·R F ITZHAKI, D M GILL
Feb 1, 1962·Journal of Bacteriology·M MANDELSE T REESE

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Citations

Feb 1, 1993·Enzyme and Microbial Technology·C P KubicekE M Kubicek-Pranz
May 24, 2011·Applied and Environmental Microbiology·André SchusterMonika Schmoll
Jan 1, 1989·Critical Reviews in Biotechnology·V S Bisaria, S Mishra
Aug 30, 2002·Applied and Environmental Microbiology·Markku SaloheimoMerja Penttilä

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