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Title

Two beta-glycanase genes are clustered in Bacillus polymyxa: molecular cloning, expression, and sequence analysis of genes encoding a xylanase and an endo-beta-(1,3)-(1,4)-glucanase

AuthorsGosalbes, María José; Pérez-González, José A.; González García, Ramón ; Navarro, A.
Issue DateDec-1991
PublisherAmerican Society for Microbiology
CitationJournal of Bacteriology 173(23): 7705–7710 81991)
AbstractTwo genes, xynD and gluB, encoding a xylanase and an endo-beta-(1,3)-(1,4)-glucanase (lichenase) from Bacillus polymyxa have been cloned and expressed in Escherichia coli and Bacillus subtilis. A sequenced DNA fragment of 4,466 bp contains both genes, which are separated by 155 bp. The xynD and gluB genes encode proteins of 67.8 kDa (XYND) and 27 kDa (GLUB). Two peptides with molecular masses of 62 and 53 kDa appear in cell extracts of E. coli and culture supernatants of B. subtilis clones containing the xynD gene. Both peptides show xylanase activity in zymogram analysis. The XYND enzyme also shows alpha-L-arabinofuranosidase activity. The XYND peptide and the xylanase XYNZ from Clostridium thermocellum (O. Grépinet, M. C. Chebrou, and P. Béguin, J. Bacteriol. 170:4582-4588, 1988) show 64% homology in a stretch of about 280 amino acids.
DescriptionPMCID: PMC212542
Publisher version (URL)http://www.ncbi.nlm.nih.gov/pmc/articles/PMC212542/
URIhttp://hdl.handle.net/10261/41709
ISSN0021-9193
E-ISSN1098-5530
Appears in Collections:(IATA) Artículos
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