Showing metabocard for PS(18:0/15:0) (MMDBc0056412)
Record Information
Version
1.0
Status
Detected and Quantified
Creation Date
2022-07-07 21:26:33 UTC
Update Date
2022-08-14 02:42:33 UTC
MiMeDB ID
MMDBc0056412
Metabolite Identification
Common Name
PS(18:0/15:0)
Description
PS(18:0/15:0) is a phosphatidylserine. It is a glycerophospholipid in which a phosphorylserine moiety occupies a glycerol substitution site. As is the case with diacylglycerols, phosphatidylserines can have many different combinations of fatty acids of varying lengths and saturation attached to the C-1 and C-2 positions. PS(18:0/15:0), in particular, consists of one chain of stearic acid at the C-1 position and one chain of pentadecanoic acid at the C-2 position. Phosphatidylserine or 1,2-diacyl-sn-glycero-3-phospho-L-serine is distributed widely among animals, plants, and microorganisms. Phosphatidylserine is an acidic (anionic) phospholipid with three ionizable groups (i.e. the phosphate moiety, the amino group and the carboxyl group). As with other acidic lipids, it exists in nature in salt form, but it has a high propensity to chelate calcium via the charged oxygen atoms of both the carboxyl and phosphate moieties, modifying the conformation of the polar head group. This interaction may be of considerable relevance to the biological function of phosphatidylserine. While most phospholipids have a saturated fatty acid on C-1 and an unsaturated fatty acid on C-2 of the glycerol backbone, the fatty acid distribution at the C-1 and C-2 positions of glycerol within phospholipids is continually in flux, owing to phospholipid degradation and the continuous phospholipid remodeling that occurs while these molecules are in membranes. Phosphatidylserines typically carry a net charge of -1 at physiological pH. They mostly have a palmitic or stearic acid on carbon 1 and a long chain unsaturated fatty acid (e.g. 18:2, 20:4 and 22:6) on carbon 2. PS biosynthesis involves an exchange reaction of serine for ethanolamine in PE.
Belongs to the class of organic compounds known as phosphatidylserines. These are glycerophosphoserines in which two fatty acids are bonded to the glycerol moiety through ester linkages.
Divecha N, Irvine RF: Phospholipid signaling. Cell. 1995 Jan 27;80(2):269-78. doi: 10.1016/0092-8674(95)90409-3. [PubMed:7834746 ]
van Engeland M, Nieland LJ, Ramaekers FC, Schutte B, Reutelingsperger CP: Annexin V-affinity assay: a review on an apoptosis detection system based on phosphatidylserine exposure. Cytometry. 1998 Jan 1;31(1):1-9. doi: 10.1002/(sici)1097-0320(19980101)31:1<1::aid-cyto1>3.0.co;2-r. [PubMed:9450519 ]
Simons K, Toomre D: Lipid rafts and signal transduction. Nat Rev Mol Cell Biol. 2000 Oct;1(1):31-9. doi: 10.1038/35036052. [PubMed:11413487 ]
Watson AD: Thematic review series: systems biology approaches to metabolic and cardiovascular disorders. Lipidomics: a global approach to lipid analysis in biological systems. J Lipid Res. 2006 Oct;47(10):2101-11. doi: 10.1194/jlr.R600022-JLR200. Epub 2006 Aug 10. [PubMed:16902246 ]
Sethi JK, Vidal-Puig AJ: Thematic review series: adipocyte biology. Adipose tissue function and plasticity orchestrate nutritional adaptation. J Lipid Res. 2007 Jun;48(6):1253-62. doi: 10.1194/jlr.R700005-JLR200. Epub 2007 Mar 20. [PubMed:17374880 ]
Lingwood D, Simons K: Lipid rafts as a membrane-organizing principle. Science. 2010 Jan 1;327(5961):46-50. doi: 10.1126/science.1174621. [PubMed:20044567 ]
Vance JE, Tasseva G: Formation and function of phosphatidylserine and phosphatidylethanolamine in mammalian cells. Biochim Biophys Acta. 2013 Mar;1831(3):543-54. doi: 10.1016/j.bbalip.2012.08.016. Epub 2012 Aug 29. [PubMed:22960354 ]
Gunstone, Frank D., John L. Harwood, and Albert J. Dijkstra (2007). The lipid handbook with CD-ROM. CRC Press.
Cevc, Gregor (1993). Phospholipids Handbook. Marcel Dekker.
Jean E. Vance (2008). Thematic Review Series: Glycerolipids. Phosphatidylserine and phosphatidylethanolamine in mammalian cells: two metabolically related aminophospholipids. The Journal of Lipid Research, 49, 1377-1387..
