Question

Phosphatidate (phosphatidic acid) is a precursor in the synthesis of some lipids. Phosphatidate (phosphatidic acid) is a branched molecule. The core of the molecule is a three carbon chain. Carbon one is single bonded to two hydrogens, and a side chain. The side chain is oxygen single bonded to carbon. The carbon is double bonded to oxygen and an R 1 side chain. Carbon two of the core chain is single bonded 1 hydrogen and to oxygen which is single bonded to carbon. The carbon is double bonded to oxygen and single bonded to an R 2 side chain. Carbon three is single bonded to two hydrogens and a phosphate group. P O 4 2 minus. Phosphatidate (phosphatidic acid) Identify the lipids that have phosphatidate as a precursor.

Answer 1

1. Phosphatidylethanolamide: The substituent head-group is ethanolamine

2. Phosphatidylcholine: The substituent head-group is choline.

3. Phosphatidylserine: The substituent head-group is serine

4. Phosphatidylglycerol: The substituent head-group is glycerol

5. Phosphatidylinositol-4,5-bisphosphate: The substituent head-group is myo-inositol-4,5-bisphosphate

6. Cardiolipin: The substituent head-group is phosphatidylglycerol

The attachment below shows the structures of the glycerospholipids

Step-by-step explanation:

Phosphatidic acid is the parent compound in glycerophospholipids.

The core of phosphatidic acid is glycerol to which two fatty acids are attached by means of ester linkages to the first ad second carbon atoms. The third carbon atom is attached to a phosphate group. The alcohol group of the phosphate group serves as a point of attachment for the polar head group of other lipids derived from phosphatidic acid. These lipids include:

1. Phosphatidylethanolamide: The substituent head-group is ethanolamine

2. Phosphatidylcholine: The substituent head-group is choline.

3. Phosphatidylserine: The substituent head-group is serine

4. Phosphatidylglycerol: The substituent head-group is glycerol

5. Phosphatidylinositol-4,5-bisphosphate: The substituent head-group is myo-inositol-4,5-bisphosphate

6. Cardiolipin: The substituent head-group is phosphatidylglycerol