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- Name help_outline 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine Identifier CHEBI:73007 Charge 0 Formula C39H76NO8P InChIKeyhelp_outline FHQVHHIBKUMWTI-OTMQOFQLSA-N SMILEShelp_outline [H][C@@](COC(=O)CCCCCCCCCCCCCCC)(COP([O-])(=O)OCC[NH3+])OC(=O)CCCCCCC\C=C/CCCCCCCC 2D coordinates Mol file for the small molecule Search links Involved in 10 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline L-serine Identifier CHEBI:33384 Charge 0 Formula C3H7NO3 InChIKeyhelp_outline MTCFGRXMJLQNBG-REOHCLBHSA-N SMILEShelp_outline [NH3+][C@@H](CO)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 85 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serine Identifier CHEBI:75029 Charge -1 Formula C40H75NO10P InChIKeyhelp_outline OIWCYIUQAVBPGV-DAQGAKHBSA-M SMILEShelp_outline CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OC[C@H]([NH3+])C([O-])=O)OC(=O)CCCCCCC\C=C/CCCCCCCC 2D coordinates Mol file for the small molecule Search links Involved in 5 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline ethanolamine Identifier CHEBI:57603 Charge 1 Formula C2H8NO InChIKeyhelp_outline HZAXFHJVJLSVMW-UHFFFAOYSA-O SMILEShelp_outline [NH3+]CCO 2D coordinates Mol file for the small molecule Search links Involved in 44 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:41484 | RHEA:41485 | RHEA:41486 | RHEA:41487 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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Phosphatidylserine synthase 2: high efficiency for synthesizing phosphatidylserine containing docosahexaenoic acid.
Kimura A.K., Kim H.Y.
Phosphatidylserine (PS), the major anionic phospholipid in eukaryotic cell membranes, is synthesized by the integral membrane enzymes PS synthase 1 (PSS1) and 2 (PSS2). PSS2 is highly expressed in specific tissues, such as brain and testis, where docosahexaenoic acid (DHA, 22:6n-3) is also highly ... >> More
Phosphatidylserine (PS), the major anionic phospholipid in eukaryotic cell membranes, is synthesized by the integral membrane enzymes PS synthase 1 (PSS1) and 2 (PSS2). PSS2 is highly expressed in specific tissues, such as brain and testis, where docosahexaenoic acid (DHA, 22:6n-3) is also highly enriched. The purpose of this work was to characterize the hydrocarbon-chain preference of PSS2 to gain insight on the specialized role of PSS2 in PS accumulation in the DHA-abundant tissues. Flag-tagged PSS2 was expressed in HEK cells and immunopurified in a functionally active form. Purified PSS2 utilized both PE plasmalogen and diacyl PE as substrates. Nevertheless, the latter was six times better utilized, indicating the importance of an ester linkage at the sn-1 position. Although no sn-1 fatty acyl preference was noted, PSS2 exhibited significant preference toward DHA compared with 18:1 or 20:4 at the sn-2 position. Preferential production of DHA-containing PS (DHA-PS) was consistently observed with PSS2 purified from a variety of cell lines as well as with microsomes from mutant cells in which PS synthesis relies primarily on PSS2. These findings suggest that PSS2 may play a key role in PS accumulation in brain and testis through high activity toward DHA-containing substrates that are abundant in these tissues. << Less
J. Lipid Res. 54:214-222(2013) [PubMed] [EuropePMC]
This publication is cited by 9 other entries.