fatty acid elongase activity obsolete icosanoyl-CoA synthase activity https://github.com/geneontology/go-ontology/issues/25965 true acyl-CoA elongase activity stearoyl-CoA elongase activity OBSOLETE. Catalysis of the reaction: stearoyl-CoA + malonyl-CoA + 2 NAD(P)H + 2 H+ = icosanoyl-CoA + CO2 + 2 NAD(P)+. C18-CoA elongase activity GO:0033807 stearoyl-CoA:malonyl-CoA C-acyltransferase (decarboxylating, oxoacyl- and enoyl-reducing) activity molecular_function This term was obsoleted because the it was obsoleted by the authoritative databases, EC and MetaCyc. very-long-chain (3R)-3-hydroxyacyl-CoA dehydratase activity very-long-chain enoyl-CoA reductase activity very-long-chain 3-oxoacyl-CoA reductase activity