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ENZYME

ENZYME entry: EC 2.4.1.14

Accepted Name
sucrose-phosphate synthase
Alternative Name(s)
sucrosephosphate--UDP glucosyltransferase
UDP-glucose-fructose-phosphate glucosyltransferase
Reaction catalysed
beta-D-fructose 6-phosphate + UDP-alpha-D-glucose = sucrose 6(F)-phosphate + UDP + H(+)
Comment(s)
  • The enzyme from Synechocystis sp. strain PCC 6803 is not specific for UDP-glucose as it can use ADP-glucose and, to a lesser extent, GDP- glucose as substrates.
  • The enzyme from rice leaves is activated by glucose 6-phosphate but that from cyanobacterial species is not.
  • While the reaction catalyzed by this enzyme is reversible, the enzyme usually works in concert with EC 3.1.3.24 to form sucrose, making the above reaction essentially irreversible.
  • The F in sucrose 6(F)-phosphate is used to indicate that the fructose residue of sucrose carries the substituent.
Cross-references
BRENDA2.4.1.14
EC2PDB2.4.1.14
ExplorEnz2.4.1.14
PRIAM enzyme-specific profiles2.4.1.14
KEGG Ligand Database for Enzyme Nomenclature2.4.1.14
IUBMB Enzyme Nomenclature2.4.1.14
IntEnz2.4.1.14
MEDLINEFind literature relating to 2.4.1.14
MetaCyc2.4.1.14
Rhea expert-curated reactions2.4.1.14
UniProtKB/Swiss-Prot
Q94BT0, SPSA1_ARATHO22060, SPSA1_CITUNO04932, SPSA1_CRAPL
A2WYE9, SPSA1_ORYSIQ0JGK4, SPSA1_ORYSJQ9FY54, SPSA2_ARATH
O04933, SPSA2_CRAPLB7F7B9, SPSA2_ORYSJQ8RY24, SPSA3_ARATH
Q67WN8, SPSA3_ORYSJF4JLK2, SPSA4_ARATHQ6ZHZ1, SPSA4_ORYSJ
Q53JI9, SPSA5_ORYSJP49031, SPSA_BETVUP31927, SPSA_MAIZE
Q43845, SPSA_SOLTUP31928, SPSA_SPIOLQ43876, SPSA_VICFA
A6LKE9, SPS_THEM4

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 2.4.-.-
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