rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
4
|
pubmed:dateCreated |
1991-8-26
|
pubmed:abstractText |
The FixL/FixJ two-component system is a global regulator of nitrogen-fixation genes in Rhizobium meliloti. The transcriptional activator FixJ contains two modules: its N-terminal module is homologous with other two-component regulators; its C-terminal module shows homology with various transcriptional activators, and with the C-terminal region of sigma factors, which is involved in the discrimination of the -35 region of bacterial promoters. We show that the C-terminal module of FixJ contains the entire transcription activation function, and that the N-terminal module regulates this activity negatively. Oligonucleotide-directed mutagenesis of the transcriptional activator module demonstrated the importance of a potential helix-turn-helix structure.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Apr
|
pubmed:issn |
0950-382X
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
5
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
987-97
|
pubmed:dateRevised |
2008-11-21
|
pubmed:meshHeading |
pubmed-meshheading:1857213-Amino Acid Sequence,
pubmed-meshheading:1857213-Bacterial Proteins,
pubmed-meshheading:1857213-DNA Mutational Analysis,
pubmed-meshheading:1857213-Genes, Bacterial,
pubmed-meshheading:1857213-Macromolecular Substances,
pubmed-meshheading:1857213-Molecular Sequence Data,
pubmed-meshheading:1857213-Nitrogen Fixation,
pubmed-meshheading:1857213-Plasmids,
pubmed-meshheading:1857213-Promoter Regions, Genetic,
pubmed-meshheading:1857213-Repressor Proteins,
pubmed-meshheading:1857213-Rhizobium,
pubmed-meshheading:1857213-Sequence Homology, Nucleic Acid,
pubmed-meshheading:1857213-Sigma Factor,
pubmed-meshheading:1857213-Transcription Factors
|
pubmed:year |
1991
|
pubmed:articleTitle |
Modular structure of FixJ: homology of the transcriptional activator domain with the -35 binding domain of sigma factors.
|
pubmed:affiliation |
Center for Molecular Genetics, UCSD, La Jolla 92093.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
|