Nucleotide sequences of xylan-inducible xylanase and xylosidase/arabinosidase genes from Bacteroides ovatus V975.

The nucleotide sequences of the xylI and xsa genes of Bacteroides ovatus V975, encoding xylanase and xylosidase activities, were determined. Both genes are part of a xylan-inducible operon, the sequenced region of which also contains a partial open reading frame upstream of the xylanase gene. Deduced amino acid sequence similarly analyses indicate that the xylanase belongs to the Family F series of glycosyl hydrolases.