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ENZYME entry: EC 5.1.3.31

Accepted Name
D-tagatose 3-epimerase.
Alternative Name(s)
Ketose 3-epimerase.
L-ribulose 3-epimerase.
Reaction catalysed
  • D-tagatose <=> D-sorbose
  • D-psicose <=> D-fructose
Cofactor(s)
Mn(2+).
Comment(s)
  • The enzymes isolated from the bacteria Pseudomonas cichorii, Pseudomonas sp. ST-24, Rhodobacter sphaeroides and Mesorhizobium loti catalyze the epimerization of various ketoses at the C(3) position, interconverting D-fructose and D-psicose, D-tagatose and D-sorbose, D-ribulose and D-xylulose, and L-ribulose and L-xylulose.
  • The specificity depends on the species.
Cross-references
BRENDA5.1.3.31
EC2PDB5.1.3.31
ExplorEnz5.1.3.31
PRIAM enzyme-specific profiles5.1.3.31
KEGG Ligand Database for Enzyme Nomenclature5.1.3.31
IUBMB Enzyme Nomenclature5.1.3.31
IntEnz5.1.3.31
MEDLINEFind literature relating to 5.1.3.31
MetaCyc5.1.3.31
UniProtKB/Swiss-Prot
O50580, DT3E_PSECI;  C1KKR1, DT3E_RHOSH;  Q98FW0, LR3E_RHILO;  

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