The amino acids found in bacteria and blue green algae are methionine,diaminopimelic acid,aspartic acid and glutamic acid.

The amino acids only in bacteria and blue green algae are Methionine, diaminopimelic, aspartic acid, glutamic acid.

The amino acid found only in bacteria and blue-green algae is Diamino-pimelic acid.

Explanation:
Diamino-pimelic acid is a unique amino acid that is found exclusively in bacteria and blue-green algae (also known as cyanobacteria). It is not present in other organisms such as animals, plants, or fungi. This amino acid plays a crucial role in the structure and function of the cell wall in these microorganisms.

Structure and synthesis:
Diamino-pimelic acid is a derivative of the amino acid lysine. It contains two amino groups (hence the name "diamino") and a pimelic acid moiety. Pimelic acid is a seven-carbon dicarboxylic acid. The synthesis of diamino-pimelic acid involves the modification of the lysine molecule through various enzymatic reactions specific to bacteria and blue-green algae.

Function:
Diamino-pimelic acid plays a critical role in the formation of the peptidoglycan layer, which is a major component of the bacterial cell wall. Peptidoglycan provides structural support and protects the bacteria from osmotic pressure changes. It also helps in maintaining cell shape and integrity. The presence of diamino-pimelic acid in the peptidoglycan layer contributes to its unique properties and distinguishes it from the cell walls of other organisms.

Importance:
The absence of diamino-pimelic acid in animals, plants, and fungi makes it a potential target for antimicrobial agents. Since it is specific to bacteria and blue-green algae, drugs can be designed to selectively inhibit the synthesis or function of diamino-pimelic acid, leading to disruption of the cell wall and ultimately bacterial death. This knowledge has been utilized in the development of antibiotics that specifically target bacterial cell walls, such as penicillins and cephalosporins.

In conclusion, diamino-pimelic acid is an amino acid found exclusively in bacteria and blue-green algae. It plays a crucial role in the formation of the bacterial cell wall and is not present in other organisms, making it a potential target for antimicrobial agents.