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EC Explorer

EC 2.3.1.252 Details
EC number
2.3.1.252
Accepted name
mycolipanoate synthase
Reaction
a long-chain acyl-CoA + 3 (S)-methylmalonyl-CoA + 6 NADPH + 6 H+ + holo-[mycolipanoate synthase] = mycolipanoyl-[mycolipanoate synthase] + 4 CoA + 3 CO2 + 6 NADP+ + 3 H2O
Other name(s)
msl3 (gene name), Pks3/4, mycolipanoic acid synthase, long-chain acyl-CoA:methylmalonyl-CoA C-acyltransferase (mycolipanoate-forming)
Systematic name
long-chain acyl-CoA:(S)-methylmalonyl-CoA C-acyltransferase (mycolipanoate-forming)
Comment
This mycobacterial enzyme accepts long-chain fatty acyl groups from their CoA esters and extends them by incorporation of three methylmalonyl (but not malonyl) residues, forming trimethyl-branched fatty-acids such as (2S,4S,6S)-2,4,6-trimethyltetracosanoate (C27-mycolipanoate). Since the enzyme lacks a thioesterase domain, the product remains bound to the enzyme and requires additional enzyme(s) for removal.
History
created 2016, modified 2019
EC Tree
2.3.1.55 created 1976, deleted 1999
2.3.1.120 created 1990, deleted 1992
2.3.1.124 created 1990, deleted 1992