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Pathway Description
Cardiolipin Biosynthesis CL(16:1(9Z)/16:1(11Z)/16:1(9Z)/20:1(11Z))
Saccharomyces cerevisiae
Metabolic Pathway
The biosynthesis of cardiolipin (CL) begins in the endoplasmic reticulum. Glycerone phosphate interacts with an NADPH resulting in the release of NADP and glycerol 3-phosphate. Glycerol 3-phosphate reacts with glycerol-3-phosphate O-acyltransferase resulting in the release of 1-acyl-sn-glycerol 3-phosphate (lysophosphatidic acid or LysoPA). The resulting compound reacts with an acyl-CoA via lysophosphatidate acyltransferase, resulting in the release of a phosphatidic acid (PA or 1,2-diacyl-sn-glycerol 3-phosphate). Phosphatidic acid is transported to the mitochondrial outer membrane. Once in, it gets transported into the mitochondrial inner membrane. The phosphatidic acid reacts with cytidine triphosphate through a phosphatidate cytidyltransferase resulting in the release of a CDP-diacylglycerol (CDP-DG). The resulting compound reacts with a glycerol 3-phosphate through a CDP-diacylglycerol-glycerol-3-phosphate 3-phosphatidyltransferase resulting in the release of cytidine monophosphate and phosphatidylglycerophosphate (PGP). PGP reacts with phosphatidylglycerophosphatase GEP4 resulting in the release of phosphatidylglycerol (PG). PG reacts with a CDP-DG through a cardiolipin synthase resulting in the release of CL and cytidine monophosphate. Cardiolipin remodelling begins with the removal of an acyl chain to form 1-monolysocardiolipin (1-MLCL) via the lipase Cld1p. This is followed by the enzyme Taz1p transferring an acyl chain from a phospholipid (e.g. phosphatidylcholine) to reform cardiolipin.
References
Cardiolipin Biosynthesis CL(16:1(9Z)/16:1(11Z)/16:1(9Z)/20:1(11Z)) References
Baile MG, Lu YW, Claypool SM: The topology and regulation of cardiolipin biosynthesis and remodeling in yeast. Chem Phys Lipids. 2014 Apr;179:25-31. doi: 10.1016/j.chemphyslip.2013.10.008. Epub 2013 Nov 1.
Pubmed: 24184646
This pathway was generated using PathWhiz -
Pon, A. et al. Pathways with PathWhiz (2015) Nucleic Acids Res. 43(Web Server issue): W552–W559.
Generated from PW002431
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