- phosphatidyl choline
The major phospholipid of most mammalian cell membranes where the 1-acyl residue is normally saturated and the 2-acyl residue unsaturated. Choline is attached to phosphatidic acid by a phosphodiester linkage. Major synthetic route is from diacyl glycerol and CDP-choline. Forms monolayers at an air/water interface, and forms bilayer structures (liposomes) if dispersed in aqueous medium. A zwitterion over a wide pH range. Readily hydrolyzed in dilute alkali.
Dictionary of molecular biology. 2004.
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phosphatidyl ethanolamine — A major structural phospholipid in mammalian systems. Tends to be more abundant than phosphatidyl choline in the internal membranes of the cell, and is an abundant component of prokaryotic membranes. Ethanolamine is attached to phosphatidic acid… … Dictionary of molecular biology
choline — Esterified in the head group of phospholipids (phosphatidyl choline and sphingomyelin) and in the neurotransmitter acetylcholine. Otherwise a biological source of methyl groups … Dictionary of molecular biology
Phosphatidylethanolamine — Other names cephalin Ident … Wikipedia
Lecithin — is any of a group of yellow brownish fatty substances occurring in animal and plant tissues, and in egg yolk, composed of phosphoric acid, choline, fatty acids, glycerol, glycolipids, triglycerides, and phospholipids (e.g., phosphatidylcholine,… … Wikipedia
lecithin — /les euh thin/, n. 1. Biochem. any of a group of phospholipids, occurring in animal and plant tissues and egg yolk, composed of units of choline, phosphoric acid, fatty acids, and glycerol. 2. a commercial form of this substance, obtained chiefly … Universalium
Lipid bilayer — [ phosphatidylcholine.] A lipid bilayer or bilayer lipid membrane (BLM) is a membrane composed of lipid molecules (usually phospholipids). The lipid bilayer is a critical component of all biological membranes, including cell membranes, and so is… … Wikipedia
lecithin — Phospholipids of egg yolk (usually hen s eggs). A mixture of phosphatidyl choline and phosphatidyl ethanolamine, but usually refers to phosphatidyl choline … Dictionary of molecular biology
Membrane curvature — is the geometrical measure or characterization of the curvature of membranes. The membranes can be naturally occurring or man made (synthetic). An example of naturally occurring membrane is the lipid bilayer of cells, also known as cellular… … Wikipedia
sphingomyelin — A sphingolipid in which the head group is phosphoryl choline. A close analogue of phosphatidyl choline. In many cells the concentration of sphingomyelin and phosphatidyl choline in the plasma membrane seems to bear a reciprocal relationship … Dictionary of molecular biology
Clostridium perfringens alpha toxin — Crystal structure of Clostridium perfringens alpha toxin Identifiers Symbol ? … Wikipedia