Effect of sulfur-containing compounds onBacilluscellulosome-associated ‘CMCase’ and ‘Avicelase’ activities

Autor:	Brett I. Pletschke, Natasha Beukes
Rok vydání:	2006
Předmět:	Bacillaceae Chromatography Glycoside Hydrolases Sulfur Compounds biology Bacillus Cellulase Cellulosomes biology.organism_classification Microbiology Cellulosome Sepharose chemistry.chemical_compound Bacterial Proteins chemistry Biochemistry Genetics biology.protein Cellulose Molecular Biology Bacillus megaterium
Zdroj:	FEMS Microbiology Letters. 264:226-231
ISSN:	1574-6968 0378-1097
DOI:	10.1111/j.1574-6968.2006.00465.x
Popis:	The isolation of cellulosomes from clostridial sources has been extensively studied; however, the isolation of cellulosomes from facultative soil anaerobes of the family Bacillaceae is not as well characterized. The Bacillus cellulosome (celluloxylanosome) essentially consists of two complex components: C-I and C-II. This multi-component complex enables Bacillus to degrade a variety of carbonaceous compounds as it is composed of several enzymes, such as cellulases, xylanases and other degradative enzymes. The cellulosomal cellulases from Bacillus megaterium were purified using cellulose affinity chromatography, followed by Sepharose 4B gel filtration chromatography. The objective of this investigation was to establish the effect of sulfate and sulfide on cellulosomal 'cellulase' activity. An increase in sulfide concentration led to a general enhancement of cellulosomal-associated cellulolytic activity, whereas an increase in sulfate concentration resulted in an inhibition of the cellulosome-associated cellulolytic activity.
Databáze:	OpenAIRE
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