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a phospholipid containing serine that is an important constituent of cell membranes and is localized preferentially in the inner surface of the plasma membrane. Abbreviated PS.

phos·pha·ti·dyl·ser·ine (PtdSer),

The condensation product of phosphatidic acid and serine; found in biomembranes.
See also: cephalin.

phosphatidylserine (fäsˑ·f·tīˈ·dl·s·rēn),

n a phospholipid that has been used to treat cognitive impairment, depression, and the symptoms of overexertion. Caution is advised for patients taking heparin. Also called


one of the lipids concerned in the structure of cell membranes.
References in periodicals archive ?
Tait, "Transmembrane voltage regulates binding of annexin V and lactadherin to cells with exposed phosphatidylserine," BMC Biochemistry, vol.
Published, clinical reports show replenishing your body's natural supply of Phosphatidylserine, not only helps sharpen your memory and concentration--but also helps "perk you up" and put you in a better mood.
During apoptoic cell death process, phosphatidylserine is translocated from the inner side to the outer layer of the plasma membrane in metazoan and unicellular cells.
However, we observed cells that express phosphatidylserine (PS) on the outer leaflet of the plasma membrane, one of the most important early molecular modifications that can indicate apoptosis (AMARANTE-MENDES; GREEN, 1999).
Expressions of P-selectin, fibrinogen, apolipoproteins Al/B and phosphatidylserine with and without clopidogrel were assayed by flow cytometry.
Now, by using a cabbage-derived enzyme to transphosphatidylate phosphatidylcholine and phosphatidylethanolamine from soy lecithin into phosphatidylserine, Lipogen is one the world's two largest phosphatidylserine producers, offering a natural, "clean" and 100% solvent-free manufacturing process for PS and phosphatidic acid (PA).
Flipping of plasma membrane in response of virus induced cell death: Monolayers of HeLa cells were infected with the virus for various time periods (0, 3, 6, 9, 12, 15 h respectively), and cells were examined for flipping of plasma membrane by measuring phosphatidylserine (PS) externalization.
Tustin, CA) reported the issuance of a United States patent with broad claims covering vascular imaging applications for phosphatidylserine (PS)-targeting antibodies.
87 [C(2)H] ppm were assigned to the head group of Phosphatidylserine (PS) (Fig.
A fatty substance and natural component of nerve cell membranes, phosphatidylserine is believed to promote the relay of brain signals between cells.
Among its recent introductions are Core4Life Advanced Memory Formula, which contains chromium picolinate, phosphatidylserine and DHA from omega-3 fatty acids, and Diabetes Essentials, a line of nutritional support drinks free of sugar, salt and calories.

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