ID 2.3.1.179 DE beta-ketoacyl-[acyl-carrier-protein] synthase II. AN 3-oxoacyl-acyl carrier protein synthase I. AN beta-ketoacyl-ACP synthase II. AN KASII. AN KAS II. CA (9Z)-hexadecenoyl-[ACP] + H(+) + malonyl-[ACP] = 3-oxo-(11Z)- CA octadecenoyl-[ACP] + CO2 + holo-[ACP]. CC -!- Involved in the dissociated (or type II) fatty acid biosynthesis CC system that occurs in plants and bacteria. CC -!- While the substrate specificity of this enzyme is very similar to CC that of EC 2.3.1.41, it differs in that palmitoleoyl-ACP is not a CC good substrate of EC 2.3.1.41 but is an excellent substrate of this CC enzyme. CC -!- The fatty-acid composition of Escherichia coli changes as a function CC of growth temperature, with the proportion of unsaturated fatty acids CC increasing with lower growth temperature. CC -!- Controls the temperature-dependent regulation of fatty-acid CC composition, with mutants lacking this acivity being deficient in the CC elongation of palmitoleate to cis-vaccenate at low temperatures. DR O34340, FABF_BACSU ; Q83E37, FABF_COXBU ; P0AAI7, FABF_ECO57 ; DR P0AAI6, FABF_ECOL6 ; P0AAI5, FABF_ECOLI ; P56902, FABF_RHIME ; DR P0AAI8, FABF_SHIFL ; Q5HHA1, FABF_STAAC ; Q99VA6, FABF_STAAM ; DR Q7A6F8, FABF_STAAN ; Q6GIA3, FABF_STAAR ; Q6GAU2, FABF_STAAS ; DR Q5TKS0, FABF_STAAU ; Q8NXE1, FABF_STAAW ; P73283, FABF_SYNY3 ; DR Q9KQH9, FABF_VIBCH ; P55338, FABF_VIBHA ; //