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ENZYME entry: EC 220.127.116.11
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|Hydrolysis of beta-D-galactopyranose-(1->4)-alpha-L-galactopyranose-6-sulfate linkages in porphyran|
- The backbone of porphyran consists largely (approximately 70%) of
(1->3)-linked beta-D-galactopyranose followed by (1->4)-linked alpha-
L-galactopyranose-6-sulfate (the other 30% are mostly agarobiose
repeating units of (1->3)-linked beta-D-galactopyranose followed by
- This enzyme cleaves the (1->4) linkages between beta-D-
galactopyranose and alpha-L-galactopyranose-6-sulfate, forming mostly
the disaccharide alpha-L-galactopyranose-6-sulfate-(1->3)-beta-D-
galactose, although some longer oligosaccharides of even number of
residues are also observed.
- Since the enzyme is inactive on the non-sulfated agarose portion of
the porphyran backbone, some agarose fragments are also included in
- Methylation of the D-galactose prevents its binding at position -1.
|PRIAM enzyme-specific profiles||18.104.22.168|
|KEGG Ligand Database for Enzyme Nomenclature||22.214.171.124|
|IUBMB Enzyme Nomenclature||126.96.36.199|
|MEDLINE||Find literature relating to 188.8.131.52|
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