2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ - palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O FAS-A mainly synthesizes the C18 fatty acids oleate and stearate with only traces of palmitate, the major product of FAS-B is pamitate ? 321418 2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ - palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O synthesis of saturated and unsaturated fatty acids, FAS-B cannot synthesize oleic acid ? 321418 2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ S-acetylpantetheine and S-malonylpantetheine and saturated acetyl-CoA derivatives can replace acetyl-CoA and malonyl-CoA palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O palmitoyl-CoA and steraoyl-CoA are main products, myristoyl-CoA is produced in small amounts ? 321418 2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ - palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O - ? 321418 2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ stable multifunctional enzyme complex: carries acetyl-CoA and malonyl-CoA transacylase, beta-ketoacyl reductase, beta-hydroxyacyl dehydrase activities on beta-subunits and condensing enzyme, i.e. beta-ketoacyl synthetase, enoylacyl reductase activities and acyl-carrier-protein components on alpha-subunits palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O - ? 321418 2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ mutants require acyl-CoA primers of 10 or more carbon atoms, maximal activity with 12-14 carbon atoms palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O - ? 321418 2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ primers instead of acetyl-CoA: propionyl-CoA, butyryl-CoA or hexanoyl-CoA palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O - ? 321418 2.3.1.86 acetyl-CoA + 7 malonyl-CoA + 7 NADH + 7 NADPH + 14 H+ intermediates are never released into the medium palmitoyl-CoA + 7 CoA + 7 CO2 + 7 NAD+ + 7 NADP+ + 7 H2O - ? 321418 2.3.1.86 acetyl-CoA + malonyl-CoA + NADH + NADPH multifunctional enzyme involved in yeast fat metabolism ? - ? 370342 2.3.1.86 decanoyl-CoA + malonyl-CoA + NADPH + H+ - ? - ? 451968 2.3.1.86 lauroyl-CoA + malonyl-CoA + NADPH + H+ - ? - ? 451969 2.3.1.86 additional information fatty acid synthetases of vertebrates and yeast are stable enzyme complexes of multifunctional polypeptide chains, the fatty acid synthetases of plants and E. coli consist of non-associated individual enzymes ? - ? 89 2.3.1.86 additional information narrow substrate specificity for both the acyl donor and the acyl carrier protein acceptor. Exclusive transfer of malonyl-CoA moieties to the mitochondrial holoacyl carrier protein ? - ? 89 2.3.1.86 myristoyl-CoA + malonyl-CoA + NADPH + H+ - ? - ? 451970 2.3.1.86 octanoyl-CoA + malonyl-CoA + NADPH + H+ - ? - ? 451971