PS(22:6(4Z,7Z,10Z,13Z,16Z,19Z)/22:1(13Z))

Found 14 Sample Hits

m/z	Adducts	Species	Organ	Scanning	Sample
890.591	[M+H]+ PPM:0.5	Homo sapiens	esophagus	DESI ()	LNTO22_1_3 - MTBLS385 Resolution: 75μm, 121x68 Description
907.6031	[M+NH4]+ PPM:15.4	Homo sapiens	colorectal adenocarcinoma	DESI ()	80TopL, 50TopR, 70BottomL, 60BottomR-profile - MTBLS415 Resolution: 17μm, 137x136 Description The human colorectal adenocarcinoma sample was excised during a surgical operation performed at the Imperial College Healthcare NHS Trust. The sample and procedures were carried out in accordance with ethical approval (14/EE/0024).
890.5879	[M+H]+ PPM:3	Homo sapiens	esophagus	DESI ()	TO29T - MTBLS385 Resolution: 75μm, 56x48 Description
890.5856	[M+H]+ PPM:5.5	Homo sapiens	esophagus	DESI ()	TO41T - MTBLS385 Resolution: 75μm, 69x43 Description
872.588	[M+H-H2O]+ PPM:9.2	Homo sapiens	esophagus	DESI ()	LNTO22_1_5 - MTBLS385 Resolution: 75μm, 135x94 Description
890.5741	[M+H]+ PPM:18.4	Homo sapiens	esophagus	DESI ()	LNTO22_1_5 - MTBLS385 Resolution: 75μm, 135x94 Description
890.5883	[M+H]+ PPM:2.5	Homo sapiens	esophagus	DESI ()	LNTO22_1_7 - MTBLS385 Resolution: 75μm, 69x54 Description
890.5741	[M+H]+ PPM:18.4	Homo sapiens	esophagus	DESI ()	LNTO22_1_8 - MTBLS385 Resolution: 75μm, 69x61 Description
890.5883	[M+H]+ PPM:2.5	Homo sapiens	esophagus	DESI ()	LNTO22_2_1 - MTBLS385 Resolution: 75μm, 89x88 Description
890.5913	[M+H]+ PPM:0.9	Homo sapiens	esophagus	DESI ()	LNTO22_2_2 - MTBLS385 Resolution: 75μm, 135x94 Description
890.5852	[M+H]+ PPM:6	Homo sapiens	esophagus	DESI ()	LNTO29_18_2 - MTBLS385 Resolution: 75μm, 62x68 Description
890.5899	[M+H]+ PPM:0.7	Homo sapiens	colorectal adenocarcinoma	DESI ()	240TopL, 210TopR, 230BottomL, 220BottomR-centroid - MTBLS176 Resolution: 50μm, 142x141 Description
890.5879	[M+H]+ PPM:3	Homo sapiens	colorectal adenocarcinoma	DESI ()	200TopL, 170TopR, 190BottomL, 180BottomR-centroid - MTBLS176 Resolution: 50μm, 132x126 Description
890.5738	[M+H]+ PPM:18.8	Homo sapiens	colorectal adenocarcinoma	DESI ()	120TopL, 90TopR, 110BottomL, 100BottomR-centroid - MTBLS176 Resolution: 50μm, 132x136 Description

PS(22:6(4Z,7Z,10Z,13Z,16Z,19Z)/22:1(13Z)) 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(22:6(4Z,7Z,10Z,13Z,16Z,19Z)/22:1(13Z)), in particular, consists of one chain of docosahexaenoic acid at the C-1 position and one chain of erucic 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.