2.02012-10-24 09:54:40 -06002015-09-14 11:19:54 -0600ECMDB23570M2MDB003960PS(12:0/19:iso)PS(12:0/19:iso) 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 atoms.. PS(12:0/19:iso), in particular, consists of one dodecanoyl chain to the C-1 atom, and one 17-methylocatdecanoyl to the C-2 atom. 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 function. As with other acidic lipids, it exists in nature in salt form, but it has a high propensity to chelate to 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 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.1-dodecanoyl-2-17-methylocatdecanoyl-sn-glycero-3-phosphoserine1-dodecanoyl-2-17-methylocatdecanoyl-sn-glycero-3-phosphoserinePhosphatidylserine(12:0/19:0)Phosphatidylserine(31:0)PS(12:0/19:0)PS(31:0)PSer(12:0/19:0)PSer(31:0)C37H70NO10P719.9262719.4737339772-amino-3-{[(2R)-3-(dodecanoyloxy)-2-[(17-methyloctadecanoyl)oxy]propyl phosphonato]oxy}propanoate2-amino-3-{[(2R)-3-(dodecanoyloxy)-2-[(17-methyloctadecanoyl)oxy]propyl phosphonato]oxy}propanoateCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC(N)C([O-])=O)OC(=O)CCCCCCCCCCCCCCCC(C)CInChI=1S/C37H72NO10P/c1-4-5-6-7-8-14-18-21-24-27-35(39)45-29-33(30-46-49(43,44)47-31-34(38)37(41)42)48-36(40)28-25-22-19-16-13-11-9-10-12-15-17-20-23-26-32(2)3/h32-34H,4-31,38H2,1-3H3,(H,41,42)(H,43,44)/p-2/t33-,34?/m1/s1BQKPHZKDTBCVRB-BONSOQDYSA-LSolidMembranelogp7.19logs-6.71solubility1.49e-04 g/llogp8.89pka_strongest_acidic1.47pka_strongest_basic9.38iupac2-amino-3-{[(2R)-3-(dodecanoyloxy)-2-[(17-methyloctadecanoyl)oxy]propyl phosphonato]oxy}propanoateaverage_mass719.9262mono_mass719.473733977smilesCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC(N)C([O-])=O)OC(=O)CCCCCCCCCCCCCCCC(C)CformulaC37H70NO10PinchiInChI=1S/C37H72NO10P/c1-4-5-6-7-8-14-18-21-24-27-35(39)45-29-33(30-46-49(43,44)47-31-34(38)37(41)42)48-36(40)28-25-22-19-16-13-11-9-10-12-15-17-20-23-26-32(2)3/h32-34H,4-31,38H2,1-3H3,(H,41,42)(H,43,44)/p-2/t33-,34?/m1/s1inchikeyBQKPHZKDTBCVRB-BONSOQDYSA-Lpolar_surface_area177.34refractivity201.9polarizability84.38rotatable_bond_count38acceptor_count7donor_count1physiological_charge-1formal_charge-2Glycerophospholipid metabolismec00564phospholipid biosynthesis CDP-DG(12:0/19:1(9Z)) IIIPhospholipids are membrane components in E. coli. The major phospholipids of E. coli are phosphatidylethanolamine, phosphatidylglycerol and cardiolipin. All phospholipids contain sn-glycerol-3-phosphate esterified with fatty acids at the sn-1 and sn-2 positions. The reaction starts from a glycerone phosphate (dihydroxyacetone phosphate) produced in glycolysis. The glycerone phosphate is transformed to a sn-glycerol 3-phosphate (glycerol 3 phosphate) by NADPH driven glycerol-3-phosphate dehydrogenase. Sn-glycerol 3-phosphate is transformed to a 1-acyl-sn-glycerol 3-phosphate(1-oleyl-2-lyso-phosphatidate , 1-palmitoylglycerol 3-phosphate , 1-stearoyl-sn-glycerol 3-phosphate). This can be achieve by a sn-glycerol-3-phosphate 1-0-acyltransferase that interacts either with a long-chain acyl-CoA or with an acyl-[acp]. The 1-acyl-sn-glycerol 3-phosphate is transformed into a 1,2-diacyl-sn-glycerol 3-phosphate through a 1-acylglycerol-3-phosphate O-acyltransferase. This compound is then converted into a CPD-diacylglycerol through a CTP (phosphatidate cytididyltransferase. CPD-diacylglycerol can be transformed either to a PS (16:1(9z)/18:1(11z))L-1-phosphatidylserine or a L-1-phosphatidy PE(16:1(9z)/18:1(11z)) (phosphatidylethanolamine) through a phosphatidylserine decarboxylase, on the other hand PGP(16:1(9z)/18:1(11z)) L-1-phosphatidylglycerol-phosphate gets transformed into a PG(16:1(9z)/18:1(11z)) L-1-phosphatidyl-glycerol through a phosphatidylglycerophosphatase. These 2 products combines produce a cardiolipin and a ethanolamine. The L-1 phosphatidyl-glycerol can also interact with cardiolipin synthase resulting in a glycerol and a cardiolipin.PW001847Metabolicphospholipid biosynthesis CDP-DG(12:0/19:1(9Z)) VPhospholipids are membrane components in E. coli. The major phospholipids of E. coli are phosphatidylethanolamine, phosphatidylglycerol and cardiolipin. All phospholipids contain sn-glycerol-3-phosphate esterified with fatty acids at the sn-1 and sn-2 positions. The reaction starts from a glycerone phosphate (dihydroxyacetone phosphate) produced in glycolysis. The glycerone phosphate is transformed to a sn-glycerol 3-phosphate (glycerol 3 phosphate) by NADPH driven glycerol-3-phosphate dehydrogenase. Sn-glycerol 3-phosphate is transformed to a 1-acyl-sn-glycerol 3-phosphate(1-oleyl-2-lyso-phosphatidate , 1-palmitoylglycerol 3-phosphate , 1-stearoyl-sn-glycerol 3-phosphate). This can be achieve by a sn-glycerol-3-phosphate 1-0-acyltransferase that interacts either with a long-chain acyl-CoA or with an acyl-[acp]. The 1-acyl-sn-glycerol 3-phosphate is transformed into a 1,2-diacyl-sn-glycerol 3-phosphate through a 1-acylglycerol-3-phosphate O-acyltransferase. This compound is then converted into a CPD-diacylglycerol through a CTP (phosphatidate cytididyltransferase. CPD-diacylglycerol can be transformed either to a PS (16:1(9z)/18:1(11z))L-1-phosphatidylserine or a L-1-phosphatidy PE(16:1(9z)/18:1(11z)) (phosphatidylethanolamine) through a phosphatidylserine decarboxylase, on the other hand PGP(16:1(9z)/18:1(11z)) L-1-phosphatidylglycerol-phosphate gets transformed into a PG(16:1(9z)/18:1(11z)) L-1-phosphatidyl-glycerol through a phosphatidylglycerophosphatase. These 2 products combines produce a cardiolipin and a ethanolamine. The L-1 phosphatidyl-glycerol can also interact with cardiolipin synthase resulting in a glycerol and a cardiolipin.PW001845MetabolicSpecdb::MsMs28712Specdb::MsMs28713Specdb::MsMs28714Specdb::MsMs35270Specdb::MsMs35271Specdb::MsMs35272Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114.22080510Casadei MA, MaƱas P, Niven G, Needs E, Mackey BM. (2002) "Role of membrane fluidity in pressure resistance of Escherichia coli NCTC 8164." Appl Environ Microbiol. 68(12):5965-72.12450817Yurtsever D. (2007). Fatty acid methyl ester profiling of Enterococcus and Esherichia coli for microbial source tracking. M.sc. Thesis. Villanova University: U.S.APhosphatidylserine decarboxylase proenzymeP0A8K1PSD_ECOLIpsdhttp://ecmdb.ca/proteins/P0A8K1.xmlPhospholipase A1P0A921PA1_ECOLIpldAhttp://ecmdb.ca/proteins/P0A921.xmlProtein crcAP37001CRCA_ECOLIcrcAhttp://ecmdb.ca/proteins/P37001.xmlCDP-diacylglycerol--serine O-phosphatidyltransferaseP23830PSS_ECOLIpssAhttp://ecmdb.ca/proteins/P23830.xmlProbable phospholipid ABC transporter-binding protein mlaBP64602MLAB_ECOLImlaBhttp://ecmdb.ca/proteins/P64602.xmlProbable phospholipid ABC transporter-binding protein mlaDP64604MLAD_ECOLImlaDhttp://ecmdb.ca/proteins/P64604.xmlProbable phospholipid ABC transporter permease protein mlaEP64606MLAE_ECOLImlaEhttp://ecmdb.ca/proteins/P64606.xmlCDP-DG(12:0/19:1(9Z)) + L-Serine + L-Serine > PS(12:0/19:iso) + Cytidine monophosphate + Hydrogen ion + Cytidine monophosphatePW_R004915PS(12:0/19:iso) + Hydrogen ion > PE(12:0/19:iso) + Carbon dioxidePW_R004916PS(12:0/19:iso) + Hydrogen ion > PE(12:0/19:1(12Z)) + Carbon dioxidePW_R004920