PS(22:0/18:1(12Z)-O(9S,10R))

Found 15 Sample Hits

m/z	Adducts	Species	Organ	Scanning	Sample
859.617	[M-H2O+NH4]+ PPM:0.1	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito03_18 - MTBLS58 Resolution: 17μm, 208x104 Description
859.6169	[M-H2O+NH4]+ PPM:0.2	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_44 - MTBLS58 Resolution: 17μm, 299x111 Description
859.6164	[M-H2O+NH4]+ PPM:0.8	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_46 - MTBLS58 Resolution: 17μm, 298x106 Description
859.6165	[M-H2O+NH4]+ PPM:0.7	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_47 - MTBLS58 Resolution: 17μm, 301x111 Description
859.6164	[M-H2O+NH4]+ PPM:0.8	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_48 - MTBLS58 Resolution: 17μm, 294x107 Description
859.6163	[M-H2O+NH4]+ PPM:0.9	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito01_04 - MTBLS58 Resolution: 17μm, 178x91 Description
859.6162	[M-H2O+NH4]+ PPM:1	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito01_03 - MTBLS58 Resolution: 17μm, 159x110 Description
859.6166	[M-H2O+NH4]+ PPM:0.6	Rattus norvegicus	normal	MALDI (DHB)	epik_dhb_head_ito01_05 - MTBLS58 Resolution: 17μm, 183x105 Description
859.6165	[M-H2O+NH4]+ PPM:0.7	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito01_06 - MTBLS58 Resolution: 17μm, 183x103 Description
859.6168	[M-H2O+NH4]+ PPM:0.3	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito03_14 - MTBLS58 Resolution: 17μm, 205x103 Description
860.6105	[M+H]+ PPM:10.9	Homo sapiens	esophagus	DESI ()	TO41T - MTBLS385 Resolution: 75μm, 69x43 Description
860.6111	[M+H]+ PPM:11.6	Homo sapiens	esophagus	DESI ()	LNTO30_8M_5 - MTBLS385 Resolution: 75μm, 56x54 Description
860.6112	[M+H]+ PPM:11.7	Homo sapiens	esophagus	DESI ()	LNTO30_17_2 - MTBLS385 Resolution: 75μm, 82x54 Description
860.6103	[M+H]+ PPM:10.7	Homo sapiens	colorectal adenocarcinoma	DESI ()	240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176 Resolution: 50μm, 142x141 Description
877.6374	[M+NH4]+ PPM:11.1	Homo sapiens	colorectal adenocarcinoma	DESI ()	240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176 Resolution: 50μm, 142x141 Description

PS(22:0/18:1(12Z)-O(9S,10R)) is an oxidized phosphatidylserine (PS). Oxidized phosphatidylserines are glycerophospholipids in which a phosphorylserine moiety occupies a glycerol substitution site and at least one of the fatty acyl chains has undergone oxidation. As all oxidized lipids, oxidized phosphatidylserines belong to a group of biomolecules that have a role as signaling molecules. The biosynthesis of oxidized lipids is mediated by several enzymatic families, including cyclooxygenases (COX), lipoxygenases (LOX) and cytochrome P450s (CYP). Non-enzymatically oxidized lipids are produced by uncontrolled oxidation through free radicals and are considered harmful to human health (PMID: 33329396). As is the case with diacylglycerols, phosphatidylserines can have many different combinations of fatty acids of varying lengths, saturation and degrees of oxidation attached at the C-1 and C-2 positions. PS(22:0/18:1(12Z)-O(9S,10R)), in particular, consists of one chain of one docosanoyl at the C-1 position and one chain of 9,10-epoxy-octadecenoyl at the C-2 position. Phospholipids are ubiquitous in nature and are key components of the lipid bilayer of cells, as well as being involved in metabolism and signaling. Similarly to what occurs with phospholipids, the fatty acid distribution at the C-1 and C-2 positions of glycerol within oxidized phospholipids is continually in flux, owing to phospholipid degradation and the continuous phospholipid remodeling that occurs while these molecules are in membranes. Oxidized PSs can be synthesized via three different routes. In one route, the oxidized PS is synthetized de novo following the same mechanisms as for PSs but incorporating oxidized acyl chains (PMID: 33329396). An alternative is the transacylation of one of the non-oxidized acyl chains with an oxidized acylCoA (PMID: 33329396). The third pathway results from the oxidation of the acyl chain while still attached to the PS backbone, mainly through the action of LOX (PMID: 33329396).