Article
Negative regulation of sigma 54-dependent dctA expression by the transcriptional activator DctD.
Journal of bacteriology - 1 May 1993
Labes M, Finan T M
Abstract excerpt
In Rhizobium meliloti, the presence of the C4-dicarboxylate transport protein DctA is required for symbiotic N2 fixation in alfalfa root nodules. Expression of dctA is inducible and is mediated by a sensor and activator gene pair encoded by dctB and dctD. In the presence of C4-dicarboxylates, the...
Topics
- Alleles
- Bacterial Proteins
- Carrier Proteins
- Chromosome Mapping
- DNA-Binding Proteins
- DNA-Directed RNA Polymerases
- Dicarboxylic Acid Transporters
- Enzyme Induction
- Enzyme Repression
- Gene Expression Regulation, Bacterial
- Glucose
- PII Nitrogen Regulatory Proteins
- Phenotype
- Promoter Regions, Genetic
- RNA Polymerase Sigma 54
- Sigma Factor
- Sinorhizobium meliloti
- Symbiosis