Biology:TyrT operon
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The tyrT operon is a series of genes encoding the tRNA for tyrosine in Escherichia coli. It is activated in response to amino acid starvation.[1]
Components
The tyrT operon consists of an upstream activation sequence, the gene for the tyrosine tRNA called tRNA1Tyr, and an RNA called rtT RNA which has an unknown function.[1]
Regulation
Transcription of the tyrT operon is activated by the stringent response.[1] Binding of the FIS protein to the operon's upstream activation sequence tightly bends the DNA, promoting transcription.[2]
References
- ↑ 1.0 1.1 1.2 "A novel RNA product of the tyrT operon of Escherichia coli". Nucleic Acids Research 19 (21): 5863–5870. 1991. doi:10.1093/nar/19.21.5863. PMID 1840671.
- ↑ "DNA supercoiling and transcription in Escherichia coli: the FIS connection". Biochimie 83 (2): 213–217. February 2001. doi:10.1016/s0300-9084(00)01217-7. PMID 11278071.
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