Delta12-fatty acid dehydrogenase

Delta12-fatty acid dehydrogenase
delta12-fatty acid dehydrogenase
Identifiers
EC number 1.14.99.33
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 Delta12-fatty acid dehydrogenase (EC 1.14.99.33) is an enzyme that catalyzes the chemical reaction

linoleate + 2AH + O2 \rightleftharpoons crepenynate + 2A + H2O

where AH is either NADH or NADPH.

The 3 substrates of this enzyme are linoleate, 2AH, and O2, whereas its 3 products are crepenynate, 2A, and H2O.

This enzyme belongs to the family of oxidoreductases, specifically those acting on paired donors, with O2 as oxidant and incorporation or reduction of oxygen. The oxygen incorporated need not be derive from O miscellaneous.

This enzyme participates in linoleic acid metabolism.

Nomenclature

The systematic name of this enzyme class is linoleate, hydrogen-donor:oxygen oxidoreductase (Delta12-unsaturating). Other names in common use include

  • crepenynate synthase and
  • linoleate Delta12-fatty acid acetylenase (desaturase).

References

  • S (1997). "Biosynthesis of an acetylenic fatty acid in microsomal preparations from developing seeds Crepis alpina. Physiol. Biochem. Mol". Biol. Plant. 12th: 57–59. 
  • S; Lenman, M; Banaś, A; Bafor, M; Singh, S; Schweizer, M; Nilsson, R; Liljenberg, C et al. (1998). "Identification of non-heme diiron proteins that catalyze triple bond and epoxy group formation". Science. 280 (5365): 915–8. doi:10.1126/science.280.5365.915. PMID 9572738. 
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