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 <=> H(+) + sucrose 6(F)-phosphate + UDP |
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 |
BRENDA | 2.4.1.14 |
EC2PDB | 2.4.1.14 |
ExplorEnz | 2.4.1.14 |
PRIAM enzyme-specific profiles | 2.4.1.14 |
KEGG Ligand Database for Enzyme Nomenclature | 2.4.1.14 |
IUBMB Enzyme Nomenclature | 2.4.1.14 |
IntEnz | 2.4.1.14 |
MEDLINE | Find literature relating to 2.4.1.14 |
MetaCyc | 2.4.1.14 |
Rhea expert-curated reactions | 2.4.1.14 |
UniProtKB/Swiss-Prot |
Q94BT0, SPSA1_ARATH; | O22060, SPSA1_CITUN; | O04932, SPSA1_CRAPL; |
A2WYE9, SPSA1_ORYSI; | Q0JGK4, SPSA1_ORYSJ; | Q9FY54, SPSA2_ARATH; |
O04933, SPSA2_CRAPL; | B7F7B9, SPSA2_ORYSJ; | Q8RY24, SPSA3_ARATH; |
Q67WN8, SPSA3_ORYSJ; | F4JLK2, SPSA4_ARATH; | Q6ZHZ1, SPSA4_ORYSJ; |
Q53JI9, SPSA5_ORYSJ; | P49031, SPSA_BETVU; | P31927, SPSA_MAIZE; |
Q43845, SPSA_SOLTU; | P31928, SPSA_SPIOL; | Q43876, SPSA_VICFA; |
A6LKE9, SPS_THEM4; |
|
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