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SteveWhen the cell is not in the presence of tryptophan, it activates a regulatory protein called the trp repressor. This repressor binds to the DNA in the promoter region of the operon controlling tryptophan synthesis, preventing RNA polymerase from transcribing the genes. As a result, the production of enzymes involved in tryptophan synthesis is inhibited.
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The expression of the tryptophan operon is controlled by?
The expression of the tryptophan operon is controlled by a repressor protein that binds to the operator region in the presence of tryptophan. When tryptophan levels are high, the repressor is active and prevents transcription of the operon. When tryptophan levels are low, the repressor is inactive, allowing transcription to occur.
How is the trp repressor protein and allosteric protein?
If Tryptophan is low in the diet, the repressor changes shape and allows the RNA polymerase to attach and copy the DNA so that Tryptophan can be produced by the cell.
What chemical grouping is responsible for a positive Hopkins-Cole test?
Tryptophan
What vitamin can be made from the amino acid tryptophan?
Vitamin B3, also known as niacin, can be synthesized in the body from the essential amino acid tryptophan. Tryptophan is converted into niacin through several metabolic pathways.
What is the turkey enzyme called?
Tryptophan.
