Anti-PTDSS2 monoclonal antibody (DCABH-7680)


Host Species
Antibody Isotype
Species Reactivity
Recombinant fragment within Human PTDSS2 aa 400 to the C-terminus (C terminal). The exact sequence is proprietary.Database link: Q9BVG9


Application Notes
WB: 1/1000 - 1/10000; Flow Cyt: 1/100; IP: 1/50 - 1/70.
*Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own experiment using appropriate negative and positive controls.


Alternative Names
PTDSS2; phosphatidylserine synthase 2; PSS2; PSS-2; ptdSer synthase 2; serine-exchange enzyme II
Entrez Gene ID
UniProt ID

Product Background

Glycerophospholipid metabolism, organism-specific biosystem; Glycerophospholipid metabolism, conserved biosystem; Metabolic pathways, organism-specific biosystem; phosphatidylethanolamine biosynthesis III, organism-specific biosystem; phosphatidylethanolamine biosynthesis III, conserved biosystem;


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Membrane phospholipids remodeling upon imbibition in Brassica napus L. seeds


Authors: Lin, Yi-xin; Xin, Xia; Yin, Guang-kun; He, Juan-juan; Zhou, Yuan-chang; Chen, Jun-ying; Lu, Xin-xiong

Successful seed germination depends on the rapid repair of cell membrane damaged by dry storage. However, little is known about the reorganization of lipids during this process. In this study, the changes of intracellular redox environment, cell membrane integrity, lipid composition, and expression of genes related to phospholipid metabolism were assessed during imbibition of Brassica napus seeds. A total number of 443 lipids belonging to 7 categories were detected by ultra-performance liquid chromatography/quadrupole time-of-flight mass spectrometry (UPLC-QTOF-MS/MS). In the 24 h-imbibed seeds, the relative content of triacylglycerol was lower than in dry seeds, while the relative content of phosphatidylcholine (PC), phosphatidylethanolamine (PE), phosphatidylinositol (PI), and phosphatidylserine (PS), especially PC (36:2, number of carbons in the acyl chains: number of double bonds), PC (36:3), and PE (36:3) were higher than those in dry seeds. Meanwhile, the content and unsaturation levels of phospholipids increased, indicating membrane lipids remodeling during seed imbibition. The plasma membrane integrity, which was measured by the relative electrolyte leakage (REL) of the membrane and FM464 fluorescent dye, was improved upon imbibition, confirming that cell membrane was repaired after 24 h-imbibition. The reduction of H2O2 content, redox potential, and malondialdehyde (MDA) content indicated that the degree of membrane lipid peroxidation was significantly decreased upon imbibition. Gene expression analysis showed that the differential expression of genes for key enzymes occurred in the plateau phase of the imbibition curve, i.e. after 8 h-to 24 h-imbibition. Moreover, the differential expression of genes such as those encoding phospholipase C (PLC), phospholipase D (PLD), triacylglycerol lipase (TAG lipase), choline/ethanolamine phosphotransferase (CEPT), and phosphatidylserine synthase (PTDSS2) during imbibition indicated that membrane lipid remodeling was related to complex metabolic pathways, among which the degradation of triacylglycerol and the synthesis of phospholipids using diacylglycerol might play an important role during membrane remodeling. (C) 2019 Elsevier Inc. All rights reserved.

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