Polyenoic fatty acid isomerase

In enzymology, a polyenoic fatty acid isomerase is an enzyme that catalyzes the chemical reaction
Hence, this enzyme has one substrate, (5Z,8Z,11Z,14Z,17Z)-icosapentaenoate, and one product, (5Z,7E,9E,14Z,17Z)-icosapentaenoate.
This enzyme belongs to the family of isomerases, specifically those intramolecular oxidoreductases transposing C=C bonds. The systematic name of this enzyme class is -icosapentaenoate Delta8,11-Delta7,9-isomerase . Other names in common use include PFI, eicosapentaenoate cis-Delta5,8,11,14,17-eicosapentaenoate, cis-Delta5-trans-Delta7,9-cis-Delta14,17 isomerase, -eicosapentaenoate Delta8,11-Delta7,8-isomerase, ', -eicosapentaenoate Delta8,11-Delta7,9-isomerase, and '.