- Palmitic acid- CH3(CH2)14COOH
- Stearic acid: CH3(CH2)16COOH
- Oleic acid- CH3(CH2)7CH=CH (CH2)7COOH
- It depends on the kinds of covalent bonds in the fatty acid parts of the molecule.
- A Saturated fatty acids has only single bonds between its carbon atom
- Mono and poly unsaturated fatty acids have one or more double bonds
- Olive oil (mono -unsaturated) and corn oil (poly -unsaturated)
* Several proteins are covalently modified by fatty acids
* They acts as energy stores (triglycerols)
* Serve as hormones (Prostaglandins) and intracellular second messengers (DAG and IP3).
- Galactosyl diglycerides and sulpholipid form are the major glycolipids of plants.
- Galactocerebroside is the main glycolipids found in the myelin sheath of nerve cells.
* High density lipoproteins (HDL) have a density of 1.019-1.063 g/mL. They transport cholesterol from peripheral tissues to the liver.
* Low density lipoproteins (LDL) have a density of 1.063-1.210 g/mL. They carry cholesterol to peripheral tissues and help regulate blood cholesterol levels.