Lacto-N-biosidase
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Template:Short description Template:Infobox enzyme Lacto-N-biosidase (Template:EC number) is an enzyme with systematic name oligosaccharide lacto-N-biosylhydrolase.[1][2] This enzyme catalyses the following chemical reaction
- (1) beta-D-Gal-(1->3)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->4)-D-Glc + H2O beta-D-Gal-(1->3)-D-GlcNAc + beta-D-Gal-(1->4)-D-Glc
- (2) lacto-N-tetraose + H2O lacto-N-biose + lactose
The enzyme from Streptomyces specifically hydrolyses the terminal lacto-N-biosyl residue (beta-D-Gal-(1->3)-D-GlcNAc) from the non-reducing end of oligosaccharides with the structure beta-D-Gal-(1->3)-beta-D-GlcNAc-(1->3)-beta-D-Gal-(1->R).
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