A developmental gene product of Bacillus subtilis homologous to the sigma factor of Escherichia coli
| Autor: | Patrick Stragier, Jekisiel Szulmajster, Jean Bouvier, Céline Bonamy |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Genetics
Spores Bacterial Multidisciplinary biology Base Sequence fungi Nucleic acid sequence Sigma Factor Bacillus subtilis biology.organism_classification Homology (biology) Gene product Molecular Weight chemistry.chemical_compound chemistry Transcription (biology) Sigma factor Genes Bacterial RNA polymerase Escherichia coli Amino Acid Sequence Gene Transcription Factors |
| Zdroj: | Nature. 312(5992) |
| ISSN: | 0028-0836 |
| Popis: | Sporulation of Bacillus subtilis involves sequential morphological and biochemical changes and is regulated by specific genes (spo genes) estimated to occupy more than 30 loci1,2. A mutation in any one of these genes blocks the sporulation process at the corresponding developmental stage. Despite intensive genetic studies, the nature and function of the spo gene products remain unknown. Vegetative B. subtilis RNA polymerase core enzyme may interact with several sigma factors and discriminate among different classes of promoters3. During sporulation, new polypeptides are associated with the core enzyme which may have a central role in modifying its promoter recognition specificity3,4. As a first step to understanding their function in the switch from vegetative to sporulation mode, several early sporulation genes have been cloned and analysed5–7. Here we report the cloning and nucleotide sequence of the spoIIG gene of B. subtilis8,9. This gene encodes a polypeptide with a predicted relative molecular mass of 27,652 which contains a 65-amino acid region highly homologous to an internal part of the Escherichia coli sigma factor. |
| Databáze: | OpenAIRE |
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