Contrary to a previous report, messenger RNA for the tryptophan operon is degraded in the 5′—3′ direction. The following two articles describe how pulse labelling and hybridization experiments ...
The nucleotide sequence of the region preceding the transcription initiation site of the tryptophan operon of Escherichia coli was determined. Essentially all of the trp operator precedes the ...
Tryptophan is an essential amino acid used to make proteins. Your body does not make it, so you need to get it from your diet. Foods that contain tryptophan include animal products like chicken and ...
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