CATH Classification

Domain Context

CATH Clusters

Superfamily 2-enoyl-CoA Hydratase; Chain A, domain 1
Functional Family Enoyl-CoA delta isomerase 1

Enzyme Information

5.3.3.8
Delta(3)-Delta(2)-enoyl-CoA isomerase.
based on mapping to UniProt P42126
(1) A (3Z)-alk-3-enoyl-CoA = a (2E)-alk-2-enoyl-CoA. (2) A (3E)-alk-3-enoyl-CoA = a (2E)-alk-2-enoyl-CoA.
-!- The enzyme participates in the beta-oxidation of fatty acids with double bonds at an odd position. -!- Processing of these substrates via the beta-oxidation system results in intermediates with a cis- or trans-double bond at position C(3), which cannot be processed further by the regular enzymes of the beta- oxidation system. -!- This enzyme isomerizes the bond to a trans bond at position C(2), which can be processed further. -!- The reaction rate is ten times higher for the (3Z) isomers than for (3E) isomers. -!- The enzyme can also catalyze the isomerization of 3-acetylenic fatty acyl thioesters to 2,3-dienoyl fatty acyl thioesters.

UniProtKB Entries (1)

P42126
ECI1_HUMAN
Homo sapiens
Enoyl-CoA delta isomerase 1, mitochondrial

PDB Structure

PDB 1SG4
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
The 1.3 A crystal structure of human mitochondrial Delta3-Delta2-enoyl-CoA isomerase shows a novel mode of binding for the fatty acyl group.
Partanen, S.T., Novikov, D.K., Popov, A.N., Mursula, A.M., Hiltunen, J.K., Wierenga, R.K.
J.Mol.Biol.