PS(20:0/18:1(12Z)-O(9S,10R))

Found 7 Sample Hits

m/z	Adducts	Species	Organ	Scanning	Sample
849.5814	[M+NH4]+ PPM:17.6	Mus musculus	Urinary bladder	MALDI (CHCA)	HR2MSI_mouse_urinary_bladder - S096 - PXD001283 Resolution: 10μm, 260x134 Description Mass spectrometry imaging of phospholipids in mouse urinary bladder (imzML dataset) The spatial distribution of phospholipids in a tissue section of mouse urinary bladder was analyzed by MALDI MS imaging at 10 micrometer pixel size with high mass resolution (using an LTQ Orbitrap mass spectrometer). R, ö, mpp A, Guenther S, Schober Y, Schulz O, Takats Z, Kummer W, Spengler B, Histology by mass spectrometry: label-free tissue characterization obtained from high-accuracy bioanalytical imaging. Angew Chem Int Ed Engl, 49(22):3834-8(2010) Fig. S2: Single ion images of compounds shown in Fig. 1A-B : (upper left to lower right) m/z = 743.5482 (unknown), m/z = 741.5307 (SM (16:0), [M+K]+), m/z = 798.5410 (PC (34:1), [M+K]+), m/z = 616.1767 (heme b, M+), m/z = 772.5253 (PC (32:0), [M+K]+). Stability of determined mass values was in the range of +/- 1 ppm over 22 hours of measurement (Fig. S4), with a standard deviation of 0.56 ppm. Accuracy data were obtained during tissue scanning experiments by monitoring the mass signal at nominal mass 798. The internal lock mass function of the Orbitrap instrument was used for automatic calibration during imaging measurements, using the known matrix-related ion signals at m/z = 137.0233, m/z = 444.0925 and m/z = 716.1246.
832.561	[M+H]+ PPM:10.6	Mus musculus	Kidney	MALDI (CHCA)	FULL_MS_centriod_CHCA_20210819 - FULL_MS_centriod_CHCA_20210819 Resolution: 17μm, 638x437 Description AP-MALDI instrument demo test, mass spectrum scan in centroid mode.
849.5794	[M+NH4]+ PPM:19.9	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito08_44 - MTBLS58 Resolution: 17μm, 299x111 Description
849.5795	[M+NH4]+ PPM:19.8	Rattus norvegicus	Epididymis	MALDI (DHB)	epik_dhb_head_ito01_04 - MTBLS58 Resolution: 17μm, 178x91 Description
832.5769	[M+H]+ PPM:8.5	Macropus giganteus	Brain	MALDI (BPYN)	170321_kangaroobrain-dan3-pos_maxof50.0_med1 - 170321_kangaroobrain-dan3-pos_maxof50.0_med1 Resolution: 50μm, 81x50 Description Sample information Organism: Macropus giganteus (kangaroo) Organism part: Brain Condition: Wildtype Sample growth conditions: Wild
832.562	[M+H]+ PPM:9.4	Mytilus edulis	mantle	MALDI (DHB)	20190216_MS38_Mytilus_mantle_350-1500_DHB_pos_A26_10um_275x210 - MTBLS2960 Resolution: 10μm, 275x210 Description
849.6064	[M+NH4]+ PPM:11.8	Homo sapiens	colorectal adenocarcinoma	DESI ()	160TopL,130TopR,150BottomL,140BottomR-centroid - MTBLS176 Resolution: 50μm, 142x136 Description

PS(20:0/18:1(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(20:0/18:1(12Z)-O(9S,10R)), in particular, consists of one chain of one eicosanoyl 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).