The Tryptophan operon leader is an RNA element found at the 5′ of some bacterial tryptophan operons. The leader sequence can form two different structures...

trp operon is a group of genes that are transcribed together, encoding the enzymes that produce the amino acid tryptophan in bacteria. The trp operon was...

first repressible operon to be discovered. While the lac operon can be activated by a chemical (allolactose), the tryptophan (Trp) operon is inhibited by...

TyrR binds to the TyrR boxes on the operon near the promoter of the gene that it wants to repress. Tryptophan biosynthesis involves conversion of chorismate...

some regulation of the trp operon (these mutants were not fully induced/repressed by tryptophan). The total range of trp operon regulation is about 700 X...

Known RNA leaders are Histidine operon leader, Leucine operon leader, Threonine operon leader and the Tryptophan operon leader.[citation needed] Iron response...

the histidine (his) and tryptophan (trp) biosynthetic operons. The term "attenuation" was introduced to describe the his operon. While it is typically...

codons. Similar motifs have been identified regulating tryptophan genes in Pseudomonadota (see trp operon), but not in Bacteroidota. However, the Bacteroid-trp...

the bacterium. While at Stanford, she worked on regulation of the tryptophan operon in Escherichia coli. Her husband, Craig Squires, was experienced in...

"Transcription termination in vitro at the tryptophan operon attenuator is controlled by secondary structures in the leader transcript". Proc Natl Acad Sci U S...