Question

Wild type E.coli cells can synthesize all 20 amino acids, but some mutants, called amino acid auxotrophs are unable to synthesize a specific amino acid and require its addition to culture medium for optimal growth. Besides their role in protein synthesis, some amino acids are also precursor for other nitrogenous products. Consider the three amino acid auxotrophs are unable to synthesize glycine, glutamine, and aspartate, respectively. For each mutant, what nitrogenous product other than proteins would the cell fail to synthesiz

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