Expasy logo

ENZYME

ENZYME entry: EC 2.4.1.387

PURL: https://purl.expasy.org/enzyme/EC/2.4.1.387
Accepted Name
isomaltosyltransferase
Reaction catalysed
  • 2 alpha-isomaltosyl-(1->4)-D-maltotriose = alpha-isomaltosyl-(1->3)-alpha-isomaltosyl-(1->4)-D-maltotriose + D-maltotriose
  • alpha-isomaltosyl-(1->3)-alpha-isomaltosyl-(1->4)-D-maltotriose = cyclobis-(1->3)-alpha-D-isomaltosyl + D-maltotriose
Comment(s)
  • The enzyme, found in bacteria that produce cyclobis-(1->6)-alpha- nigerosyl, acts on the products of EC 2.4.1.24.
  • It catalyzes the alpha-(1->3) transfer of the isomaltosyl moiety of one substrate to another, resulting in alpha-isomaltosyl-(1->3)- alpha-isomaltosyl-alpha-(1->4)-glucan formation.
  • In addition, the enzyme catalyzes the intramolecular cyclization of the product, eventually generating cyclobis-(1->6)-alpha-nigerosyl.
Cross-references
Rhea expert-curated reactions2.4.1.387
ExplorEnz2.4.1.387
IUBMB Enzyme Nomenclature2.4.1.387
UniProtKB/Swiss-Prot
Q8RQV0, CTSY_SPOGL
BRENDA2.4.1.387
MetaCyc2.4.1.387
KEGG Ligand Database for Enzyme Nomenclature2.4.1.387
EC2PDB2.4.1.387
MEDLINEFind literature relating to 2.4.1.387

View entry in original ENZYME format
View entry in raw text format (no links)
All UniProtKB/Swiss-Prot entries referenced in this entry, with possibility to download in different formats, align etc.
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.-.-.-