Fatty acyl-CoA synthetases similar to LC-FACS from Thermus thermophiles
This family includes fatty acyl-CoA synthetases that can activate medium-chain to long-chain fatty acids. They catalyze the ATP-dependent acylation of fatty acids in a two-step reaction. The carboxylate substrate first reacts with ATP to form an acyl-adenylate intermediate, which then reacts with CoA to produce an acyl-CoA ester. Fatty acyl-CoA synthetases are responsible for fatty acid degradation as well as physiological regulation of cellular functions via the production of fatty acyl-CoA esters. The fatty acyl-CoA synthetase from Thermus thermophiles in this family has been shown to catalyze the long-chain fatty acid, myristoyl acid, while another member in this family, the AlkK protein identified in Pseudomonas oleovorans, targets medium chain fatty acids. This family also includes an uncharacterized subgroup of FACS.
Jiyao W et al.(2023). "The conserved domain database in 2023.",