At the endoplasmic reticulum (ER) membrane, lysophospholipid acyltransferases acylate 1-acyl lysophosphatidylglycerol (LPG) to form phosphatidylglycerol (PG). The lysophospholipid acyltransferases involved are: lysophosphatidylcholine acyltransferase 1 (LPCAT1) (Nakanishi et al. 2006, Chen et al. 2006), lysophospholipid acyltransferase LPCAT4 (LPCAT4) aka LPEAT2 (Cao et al. 2008, Ye et al. 2005); or acyl-CoA:lysophosphatidylglycerol acyltransferase (LPGAT1) (Yang et al. 2004).
At the endoplasmic reticulum (ER) membrane, lysophospholipid acyltransferases acylate 2-acyl lysophosphatidylglycerol (LPG) to form phosphatidylglycerol (PG). The lysophospholipid acyltransferases involved are: lysophosphatidylcholine acyltransferase 1 (LPCAT1) (Nakanishi et al. 2006, Chen et al. 2006), lysophospholipid acyltransferase LPCAT4 (LPCAT4) aka LPEAT2 (Cao et al. 2008, Ye et al. 2005); or acyl-CoA:lysophosphatidylglycerol acyltransferase (LPGAT1) (Yang et al. 2004).
In the acyl chain remodelling pathway (Lands cycle), phosphatidylglycerol (PG) is hydrolyzed by phopholipases and subsequently reacylated by acyltransferases. These cycles modify the fatty acid composition of glycerophospholipids to generate diverse molecules asymmetrically distributed in the cell membrane. The events occur additionally in the inner mitochondria membranes (IM) as well as in the endoplasmic reticulum (ER) membrane (Ghomashchi et al. 2010, Singer et al. 2002, Cao et al. 2008, Yang et al. 2004, Nie et al. 2010).