Fructose-6-phosphate phosphoketolase
| fructose-6-phosphate phosphoketolase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC no. | 4.1.2.22 | ||||||||
| CAS no. | 37290-57-6 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
| |||||||||
In enzymology, a fructose-6-phosphate phosphoketolase (EC 4.1.2.22) is an enzyme that catalyzes the chemical reaction
- D-fructose 6-phosphate + phosphate acetyl phosphate + D-erythrose 4-phosphate + H2O
Thus, the two substrates of this enzyme are D-fructose 6-phosphate and phosphate, whereas its 3 products are acetyl phosphate, D-erythrose 4-phosphate, and H2O.
This enzyme belongs to the family of lyases, specifically the aldehyde-lyases, which cleave carbon-carbon bonds. The systematic name of this enzyme class is D-fructose-6-phosphate D-erythrose-4-phosphate-lyase (adding phosphate; acetyl-phosphate-forming). Other names in common use include D-fructose-6-phosphate D-erythrose-4-phosphate-lyase, and (phosphate-acetylating). This enzyme participates in pentose phosphate pathway.
References
- Schramm M, Klybas V, Racker E (1958). "Phospholytic cleavage of fructose-6-phosphate by fructose-6-phosphate phosphoketolase from Acetobacter xylinum". J. Biol. Chem. 233: 1283–1288.