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Dipalmitoylphosphatidylcholine (DPPC) is a phospholipid (and a lecithin) consisting of two C 16 palmitic acid groups attached to a phosphatidylcholine head-group. It is the main constituent of pulmonary surfactants, which reduces the work of breathing and prevents alveolar collapse during breathing.
Phosphatidylcholine is a major constituent of cell membranes and pulmonary surfactant, and is more commonly found in the exoplasmic or outer leaflet of a cell membrane. It is thought to be transported between membranes within the cell by phosphatidylcholine transfer protein (PCTP).
The DPPC is the strongest surfactant molecule in the pulmonary surfactant mixture. It also has a higher compaction capacity than the other phospholipids, because the apolar tail is less bent. Nevertheless, without the other substances of the pulmonary surfactant mixture, the DPPC's adsorption kinetics is very slow.
Phosphatidylcholine is the major component of lecithin. It is also a source for choline in the synthesis of acetylcholine in cholinergic neurons. Phospholipids [ 1 ] are a class of lipids whose molecule has a hydrophilic "head" containing a phosphate group and two hydrophobic "tails" derived from fatty acids , joined by an alcohol residue ...
This study involves creating a combination of model membranes which contain 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) and 1,2-distearoly-sn-glycero-3-phosphocholine (DSPC) referred to as the "host membranes", phospholipids labeled as 1,2,& 3 referred to as "exchanging molecules" or "reporting molecules" and varied cholesterol mole ...
POPC (1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine) is a phosphatidylcholine. It is a diacylglycerol phospholipid. It is an important phospholipid for biophysical experiments and has been used to study various subjects such as lipid rafts. POPC is also used in systems mimicking the cell membrane such as Nanodiscs. [1]
Phosphatidylcholine, a type of phospholipid in lecithin. The lecithin–sphingomyelin ratio (L/S ratio or L-S ratio) is a test of fetal amniotic fluid to assess for fetal lung immaturity. [1] [2] [3] Lungs require surfactant, a soap-like substance, to lower the surface tension of the fluid coating the alveolar epithelium in the lungs.
CDP-choline + 1,2-diacylglycerol ⇌ phosphatidylcholine + CMP; The last step in the CDP-choline pathway is catalyzed by either CPT or CEPT and are localized to the Golgi or endoplasmic reticulum, respectively. CPT and CEPT are encoded by separate genes that share 60% sequence similarity. Both isoforms contain 7 transmembrane segments, and an ...