ID 2.3.1.295 DE mycoketide-CoA synthase. CA 5 (S)-methylmalonyl-CoA + a medium-chain fatty acyl-CoA + 32 H(+) + CA 5 malonyl-CoA + 22 NADPH = a mycoketide-CoA + 10 CO2 + 10 CoA + 11 H2O + CA 22 NADP(+). CC -!- The enzyme, found in mycobacteria, is involved in the synthesis of CC beta-D-mannosyl phosphomycoketides. CC -!- It is a very large polyketide synthase that contains two complete CC sets of FAS-like fatty acid synthase modules. CC -!- It binds an acyl-CoA with 5-9 carbons as a starter unit, and extends CC it by five rounds of alternative additions of malonyl-CoA and CC methylmalonyl-CoA extender units. CC -!- Depending on the starter unit, the enzyme forms mycoketide-CoAs of CC different lengths. DR I6XD69, PKS12_MYCTU; //