p chem t4

The ability to reutilize the glycerol in the monoglyceride acylation pathway.

Monoglyceride acylation pathway

in between meals

cardiolipin

• Phosphatidylcholine (lecithin)
• Phosphatidylserine
• Phosphatidylethanolamine (cephalin)
• Phosphatidylinositol
• Plamalogens
• Cardiolipin

• building blocks of membranes.
• components of lipoproteins. contribute constituents (DAG and IP3) to intracellular signal transduction pathways, and to eicosanoid biosynthesis. Play a role in blood coagulation (plasmalogen-PAF). Functional elements of bile (lecithin) and lung surfactant (DPPC).

with 3SAM to hepatic lecithin (phosphatidylcholine)

Each methyl group of choline and carnitine. The methyl in epinephrine. Methyls in catecholamine degradation products (catalyzed by COMT). The methyl for modifying purine and pyrimidine bases in DNA and RNA. Methyl for the 5' cap of eukaryotic messenger RNA.

Glycerol holding two phosphatidic acid residues together.

Bacterial membranes and inner mitochondrial membranes.

• Made up of DPPC (dipalmitoylphosphatidylcholine).
• Decreases the surface tension of alveolar membranes, thus helping to keep alveoli open for gas exchange.