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EC 6.2.1.57 Details
EC number
6.2.1.57
Accepted name
long-chain fatty acid adenylase/transferase FadD23
Reaction
(1) ATP + stearate + a holo-[(hydroxy)phthioceranic acid synthase] = AMP + diphosphate + a stearoyl-[(hydroxy)phthioceranic acid synthase] (overall reaction);;(1a) ATP + stearate = diphosphate + (stearoyl)adenylate;;(1b) (stearoyl)adenylate + a holo-[(hydroxy)phthioceranic acid synthase] = AMP + a stearoyl-[(hydroxy)phthioceranic acid synthase];;(2) ATP + palmitate + a holo-[(hydroxy)phthioceranic acid synthase] = AMP + diphosphate + a palmitoyl-[(hydroxy)phthioceranic acid synthase] (overall reaction);;(2a) ATP + palmitate = diphosphate + (palmitoyl)adenylate;;(2b) (palmitoyl)adenylate + a holo-[(hydroxy)phthioceranic acid synthase] = AMP + a palmitoyl-[(hydroxy)phthioceranic acid synthase];;
Other name(s)
fadD23 (gene name), long-chain fatty acid adenylyltransferase FadD23
Systematic name
palmitate:holo-[(hydroxy)phthioceranic acid synthase] ligase
Comment
This mycobacterial enzyme activates palmitate and stearate by adenylation, followed by their loading onto the polyketide synthase EC 2.3.1.287, phthioceranic/hydroxyphthioceranic acid synthase.
History
created 2019
EC Tree
1.14.11.5 created 1972, deleted 1976
1.14.17.2 created 1972, deleted 1984