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Question
Which of the following amino acid is present only in bacteria and blue green algae?
Which of the following amino acid is present only in bacteria and blue green algae?
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Solution
The correct option is D Diaminopimelic acid
Diaminopimelic acid is a amino acid which is present in bacteria and blue green algae. It is a derivative of lysine. It is found in the peptide linkages of NAM-NAG chains that make up the cell wall of Gram-negative bacteria. During its deficiency, bacteria is able to grow but they are unable to synthesize proteoglycan for the new cell wall. It is involved in cross-linking of the peptides by pentaglycine bridges in Gram-positive bacteria. So, the correct answer is option B.
Diaminopimelic acid is a amino acid which is present in bacteria and blue green algae. It is a derivative of lysine. It is found in the peptide linkages of NAM-NAG chains that make up the cell wall of Gram-negative bacteria. During its deficiency, bacteria is able to grow but they are unable to synthesize proteoglycan for the new cell wall. It is involved in cross-linking of the peptides by pentaglycine bridges in Gram-positive bacteria.
So, the correct answer is option B.
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