| Regulated Operon: | leuS | 
| Genes | Synonyms | Direction | Genome position | Function | COG ID | Genus clusters | 
|---|---|---|---|---|---|---|
| leuS | - | 3101678..3104092 | leucyl-tRNA synthetase | COG0495 | leuS-BAC leuS-STA leuS-STR | 
| Operon evidence: | Genome analysis | 
|---|---|
| Reference: | Vander Horn PB & Zahler SA (1992), Grundy FJ & Henkin TM (1993), Lapidus A, et al. (1997), Genbank AF008220 | 
| Comments: | Based on homology, transcriptional readthrough is expected to occur at the stem-loop upstream of leuS if uncharged leucine tRNA binds to the T-box motif in the nascent mRNA transcript. The tRNA anticodon binds to the CUC codon in the sequence GAACUCACC in the leuS leader mRNA. | 
  
| Binding factor  | 
  Regulation | Location | Absolute position | Binding seq.(cis-element) | Experimental evidence | 
|---|---|---|---|---|---|
| TrnS-Leu2 | Positive | ND | 3104229..3104246 | AACGAGGGTGGTACCGCG | 
  Vander Horn PB & Zahler SA (1992): HM | 
| Terminator sequence | Absolute position | Position from stop codon | Free energy [kcal/mol]  | 
  Downstream of | 
|---|---|---|---|---|
| GAAAGTCTCTCGTCCCTTTTTGGGATGAGGGAGTTTTTTTTAGTTTGG >>>>>>>>>>> <<<<<<<<<<<  | 
  leuS | |||
| AAAAATCCCCTTTGCCAAAAGGGGATTTTTTTTCATCAGT >>>>>>>> <<<<<<<<  | 
  leuS | 


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