| Regulated Operon: | gabTD | 
| Genes | Synonyms | Direction | Genome position | Function | COG ID | Genus clusters | 
|---|---|---|---|---|---|---|
| gabT | ycnG | + | 441139..442449 | 4-aminobutyrate aminotransferase | COG0160 | gabT-BAC | 
| gabD | ycnH | + | 442518..443906 | succinate-semialdehyde dehydrogenase | COG1012 | gabD-BAC | 
| Operon evidence: | lacZ gene fusion to gabT and gabTD; 5' primer extension analysis of the downstream glcU-gdh operon; Northern blotting (2.6 kb transcript) | 
|---|---|
| Reference: | Belitsky BR & Sonenshein AL (2002), BSORF | 
| Comments: | The lacZ fusions showed that an internal promoter (sigma factor unknown) exists between gabT and gabD. The Northern blotting results in BSORF only showed the gabTD transcript. | 
| Binding factor | Regulation | Location | Absolute position | Binding seq.(cis-element) | Experimental evidence | 
|---|---|---|---|---|---|
| GabR | Positive | ND | ND | ND | Belitsky BR & Sonenshein AL (2002): PE SDM | 
| SigA | Promoter | -39:+18 | 441072..441128 | TTGGTACTTTTCATCATACCAAAGAGAAGTCAGAATGATAAGAAAATACCGACAGGG | Belitsky BR & Sonenshein AL (2002): PE | 
| SigB | Promoter | -37:+4 | 442324..442364 | AACGGATTACTTTTGCTGACAGCGGGAATTAACGGTAATAT | Petersohn A, et al. (1999): HB PE | 
| Terminator sequence | Absolute position | Position from stop codon | Free energy [kcal/mol] | Downstream of | 
|---|---|---|---|---|
| CCTGAGAGCTGCCGGATTTTCCGGCAGCTCTTTTTGTGTTCCGGC >>>>>>>>>>> <<<<<<<<<<< | gabD | 


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