Abstract
We report the identification and cloning of an ntrA-like (glnF rpoN) gene of Rhizobium meliloti and show that the R. meliloti ntrA product (NtrA) is required for C4-dicarboxylate transport as well as for nitrate assimilation and symbiotic nitrogen fixation. DNA sequence analysis showed that R. meliloti NtrA is 38% homologous with Klebsiella pneumoniae NtrA. Subcloning and complementation analysis suggested that the R. meliloti ntrA promoter lies within 125 base pairs of the initiation codon and may be constitutively expressed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2424-2431 |
| Number of pages | 8 |
| Journal | Journal of bacteriology |
| Volume | 169 |
| Issue number | 6 |
| DOIs | |
| State | Published - 1987 |
All Science Journal Classification (ASJC) codes
- Microbiology
- Molecular Biology
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