Reaction: palmitoyl-[acyl-carrier protein] + reduced acceptor + O2 = (4Z)-hexadec-4-enoyl-[acyl-carrier protein] + acceptor + 2 H2O
Other name(s): Δ4-palmitoyl-[acyl carrier protein] desaturase
Systematic name: palmitoyl-[acyl-carrier protein],reduced acceptor:oxygen oxidoreductase (4,5 cis-dehydrogenating)
Comments: The enzyme, characterized from the plant Coriandrum sativum (coriander), is involved in biosynthesis of petroselinate [(6Z)-octadec-6-enoate], which is formed by elongation of (4Z)-hexadec-4-enoate.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number:
1. Cahoon, E.B., Shanklin, J. and Ohlrogge, J.B. Expression of a coriander desaturase results in petroselinic acid production in transgenic tobacco. Proc. Natl. Acad. Sci. USA 89 (1992) 11184-11188. [PMID: 1454797]
2. Cahoon, E.B. and Ohlrogge, J.B. Metabolic evidence for the involvement of a Δ4-palmitoyl-acyl carrier protein desaturase in petroselinic acid synthesis in coriander endosperm and transgenic tobacco cells. Plant Physiol. 104 (1994) 827-837. [PMID: 12232129]