Eukaryotic long-chain fatty acid CoA synthetase (LC-FACS), including fungal proteins
The members of this family are eukaryotic fatty acid CoA synthetases (EC 6.2.1.3) that activate fatty acids with chain lengths of 12 to 20 and includes fungal proteins. They act on a wide range of long-chain saturated and unsaturated fatty acids, but the enzymes from different tissues show some variation in specificity. LC-FACS catalyzes the formation of fatty acyl-CoA in a two-step reaction: the formation of a fatty acyl-AMP molecule as an intermediate, and the formation of a fatty acyl-CoA. This is a required step before free fatty acids can participate in most catabolic and anabolic reactions. Organisms tend to have multiple isoforms of LC-FACS genes with multiple splice variants. For example, nine genes are found in Arabidopsis and six genes are expressed in mammalian cells. In Schizosaccharomyces pombe, lcf1 gene encodes a new fatty acyl-CoA synthetase that preferentially recognizes myristic acid as a substrate.
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