PGP(a-21:0/20:4(6E,8Z,11Z,14Z)+=O(5))

Found 5 Sample Hits

m/z	Adducts	Species	Organ	Scanning	Sample
934.5573	[M-H2O+NH4]+ PPM:0.5	Mytilus edulis	mantle	MALDI (DHB)	20190201_MS38_Crassostrea_Mantle_350-1500_DHB_pos_A28_10um_270x210 - MTBLS2960 Resolution: 10μm, 270x210 Description
934.5565	[M-H2O+NH4]+ PPM:0.4	Mytilus edulis	gill	MALDI (DHB)	20190202_MS38_Crassostrea_Gill_350-1500_DHB_pos_A25_11um_305x210 - MTBLS2960 Resolution: 11μm, 305x210 Description single cell layer class_4 is the gill structure cells, metabolite ion 534.2956 is the top representive ion of this type of cell
935.5403	[M+H]+ PPM:0.6	Homo sapiens	colorectal adenocarcinoma	DESI ()	240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176 Resolution: 50μm, 142x141 Description
935.5417	[M+H]+ PPM:0.9	Homo sapiens	colorectal adenocarcinoma	DESI ()	200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176 Resolution: 50μm, 132x126 Description
935.5408	[M+H]+ PPM:0.1	Homo sapiens	colorectal adenocarcinoma	DESI ()	160TopL,130TopR,150BottomL,140BottomR-centroid - MTBLS176 Resolution: 50μm, 142x136 Description

PGP(a-21:0/20:4(6E,8Z,11Z,14Z)+=O(5)) is an oxidized phosphoglycerophosphate (PGP). Oxidized phosphoglycerophosphates are glycerophospholipids in which a phosphoglycerol moiety occupies a glycerol substitution site and at least one of the fatty acyl chains has undergone oxidation. As all oxidized lipids, oxidized phosphoglycerophosphates 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, phosphoglycerophosphates 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. PGP(a-21:0/20:4(6E,8Z,11Z,14Z)+=O(5)), in particular, consists of one chain of one 18-methyleicosanoyl at the C-1 position and one chain of 5-oxo-eicosatetraenoyl 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 PGPs can be synthesized via three different routes. In one route, the oxidized PGP is synthetized de novo following the same mechanisms as for PGPs 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 PGP backbone, mainely through the action of LOX (PMID: 33329396).