What are the original sources of sulfur and tryptophan

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Questions:

1. What are the original sources of sulfur and tryptophan in the SIM agar medium?

2. What enzymes catalyse the metabolism of the amino acids Cysteine and Tryptophan?

3. One of the products of the metabolism of the amino acid Tryptophan is pyruvic acid. Why do we look for the production of Indole, and not the production of pyruvic acid, to show that the cells can metabolize Tryptophan?

Reference no: EM133380259

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