Amino acid found only in bacteria and cyanobacteria is
A
Muramic acid
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B
Methionine
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C
Glutamic acid
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D
Diaminopimelic acid
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Solution
The correct option is D Diaminopimelic acid Diaminopimelic (DAP) acid is an amino acid which is a characteristic of certain cell walls of some bacteria. DAP is often found in the peptide linkages of NAM-NAG chains that make up the cell wall of gram-negative bacteria (Cyanobacteria).