Myo-inosose-2 dehydratase

Myo-inosose-2 dehydratase
myo-inosose-2 dehydratase
Identifiers
EC number 4.2.1.44
CAS number 37290-79-2
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 / EGO

In enzymology, a myo-inosose-2 dehydratase (EC 4.2.1.44) is an enzyme that catalyzes the chemical reaction

2,4,6/3,5-pentahydroxycyclohexanone \rightleftharpoons 3,5/4-trihydroxycyclohexa-1,2-dione + H2O

Hence, this enzyme has one substrate, 2,4,6/3,5-pentahydroxycyclohexanone, and two products, 3,5/4-trihydroxycyclohexa-1,2-dione and H2O.

This enzyme belongs to the family of lyases, specifically the hydro-lyases, which cleave carbon-oxygen bonds. The systematic name of this enzyme class is 2,4,6/3,5-pentahydroxycyclohexanone hydro-lyase (3,5/4-trihydroxycyclohexa-1,2-dione-forming). Other names in common use include inosose 2,3-dehydratase, ketoinositol dehydratase, and 2,4,6/3,5-pentahydroxycyclohexanone hydro-lyase. This enzyme participates in inositol phosphate metabolism. It has 2 cofactors: manganese, and Cobalt.

References

  • Berman T, Magasanik B (1966). "The pathway of myo-inositol degradation in Aerobacter aerogenes Dehydrogenation and dehydration". J. Biol. Chem. 241 (4): 800–6. PMID 5905122. 
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