ID   2.3.1.330
DE   D-xylulose 5-phosphate:acyl-carrier protein glycolyltransferase system.
CA   N(6)-[(R)-lipoyl]-L-lysyl-[lipoyl-carrier protein] + D-xylulose
CA   5-phosphate + holo-[ACP] = glycoloyl-[ACP] + N(6)-[(R)-dihydrolipoyl]-L-
CA   lysyl-[lipoyl-carrier protein] + D-glyceraldehyde 3-phosphate.
CC   -!- This enzyme system produces glycolyl-[acyl-carrier protein] units
CC       that can be used by non-ribosomal peptide synthases.
CC   -!- It catalyzes a transketolase-like reaction on ketose phosphates
CC       derived from primary metabolism and transfers the resulting glycolyl
CC       moiety to a dedicated acyl-carrier protein.
CC   -!- During the reaction cycle the glycolyl moiety is transferred first to
CC       a thiamine diphosphate cofactor, then to a lipoyl cofactor,
CC       and eventually to the acyl-carrier protein.
CC   -!- While D-xylulose 5-phosphate is the best substrate, the enzyme can
CC       also accept D-fructose 6-phosphate and D-sedheptulose 7-phosphate.
CC   -!- During the reaction the lipoyl cofactor is reduced to dihydrolipoyl,
CC       which must be oxidized back to lipoyl by an unknown enzyme.
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