IUBMB Enzyme Nomenclature


Accepted name: linoleoyl-lipid Δ9 conjugase

Reaction: a linoleoyl-[glycerolipid] + reduced acceptor + O2 = an (8E,10E,12Z)-octadeca-8,10,12-trienoyl-[glycerolipid] + acceptor + 2 H2O

Glossary: calendate = (8E,10E,12Z)-octadeca-8,10,12-trienoate

Systematic name: linoleoyl-lipid,reduced acceptor:oxygen 8,11-allylic oxidase (8E,10E-forming)

Comments: The enzyme, characterized from the plant Calendula officinalis, converts a single cis double bond at position 9 of fatty acids incorporated into glycerolipids into two conjugated trans double bonds at positions 8 and 10.

Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:


1. Qiu, X., Reed, D.W., Hong, H., MacKenzie, S.L. and Covello, P.S. Identification and analysis of a gene from Calendula officinalis encoding a fatty acid conjugase. Plant Physiol. 125 (2001) 847-855. [PMID: 11161042]

2. Cahoon, E.B., Ripp, K.G., Hall, S.E. and Kinney, A.J. Formation of conjugated Δ810-double bonds by Δ12-oleic-acid desaturase-related enzymes: biosynthetic origin of calendic acid. J. Biol. Chem. 276 (2001) 2637-2643. [PMID: 11067856]

[EC created 2015]

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