Alginate lyase

UniProtKB accession:  Q06749

Grouped By:  Matching UniProtKB accession

UniProtKB description:  Catalyzes the depolymerization of alginate by cleaving the beta-1,4 glycosidic bond between two adjacent sugar residues via a beta-elimination mechanism (PubMed:8370530, PubMed:8335634, PubMed:23215237). May serve to degrade mislocalized alginate that is trapped in the periplasmic space. Acts preferentially on non-acetylated alginate or its precursor mannuronan. Is able to catalyze cleavage adjacent to either mannuronate or guluronate residues in alginate. Exhaustive digestion of alginate by AlgL generates dimeric and trimeric products (PubMed:23215237). In addition to its enzymatic function, AlgL appears to be required for alginate export, maybe as part of a multi-protein alginate-secretion complex (PubMed:16177314).