Table S4.
Plasmids used in this study
| Plasmid | Relevant features | Source/reference |
| pJG476 | pJG194 (25) carrying the acdS upstream region; KmR | (12) |
| pJG542 | lacI-Ptac expression vector | This study |
| pPP047 | Plasmid carrying a Himar1-based transposon system with T7 promotors oriented toward the chromosome; KmR | (26) |
| pPP101 | pJQ200 (27) derivative carrying the acdS upstream region but lacking the sacB gene; GmR | This study |
| pPP105 | pJG194 (25) carrying an hrrP internal fragment; KmR | This study |
| pPP119 | pJG542 carrying hrrP with a C-terminal His6X-tag | This study |
| pPP123 | pJG110 (mini-Tn5) (25) carrying hrrP with a E62A mutation with native promoter; ApR, KmR | This study |
| pPP124 | pJG110 (mini-Tn5) (25) carrying hrrP with native promoter; ApR, KmR | This study |
| pPP132 | pJG194 (25) carrying an hrrP promoter (474 bp)-GUS fusion; KmR | This study |
| pPP147 | pRF771 (28) carry hrrP driven by the trp promoter; TcR | This study |
| pPP156 | pJG194 (25) carrying an nifH promoter (523 bp)-GUS fusion; KmR | This study |
| pPP157 | pJG194 (25) carrying an flaB promoter (124 bp)-GUS fusion; KmR | This study |
| pPP169 | pJG392 (25) carrying an nifH internal fragment; TcR | This study |
| pPP196 | pJG542 carrying hrrP with a E62A mutation and a C-terminal His6X-tag | This study |
| pPP255 | pJG194 (25) carrying the Ptrp promoter from pRF771 (26)-GUS fusion and a rhaK locus integration sequence; KmR | This study |