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ENZYME entry: EC 5.3.1.27

Accepted Name
6-phospho-3-hexuloisomerase.
Alternative Name(s)
3-hexulose-6-phosphate isomerase.
6-phospho-3-hexulose isomerase.
PHI.
Phospho-3-hexuloisomerase.
Reaction catalysed
D-arabino-hex-3-ulose 6-phosphate <=> D-fructose 6-phosphate
Comment(s)
  • This enzyme, along with EC 4.1.2.43, plays a key role in the ribulose-monophosphate cycle of formaldehyde fixation, which is present in many microorganisms that are capable of utilizing C1-compounds.
  • The hyperthermophilic and anaerobic archaeon Pyrococcus horikoshii OT3 constitutively produces a bifunctional enzyme that sequentially catalyzes the reactions of EC 4.1.2.43 and this enzyme.
Cross-references
PROSITEPDOC51464
BRENDA5.3.1.27
EC2PDB5.3.1.27
ExplorEnz5.3.1.27
PRIAM enzyme-specific profiles5.3.1.27
KEGG Ligand Database for Enzyme Nomenclature5.3.1.27
IUBMB Enzyme Nomenclature5.3.1.27
IntEnz5.3.1.27
MEDLINEFind literature relating to 5.3.1.27
MetaCyc5.3.1.27
Rhea expert-curated reactions5.3.1.27
UniProtKB/Swiss-Prot
P42404, PHI_BACSU;  Q9S0X3, PHI_METAM;  Q58644, PHI_METJA;  
Q9LBW5, PHI_MYCGS;  

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