Transcriptional analysis of the recA gene in Streptomyces rimosus: identification of the new type of promoter.
FEMS Microbiol Lett
; 209(1): 133-7, 2002 Mar 19.
Article
em En
| MEDLINE
| ID: mdl-12007666
ABSTRACT
Using primer-extension analysis we identified two transcription start sites for the recA gene in Streptomyces rimosus. A longer, weak transcript is initiated from the distal SEP promoter that contains a Cheo box like sequence GAAC-N4-ATTC. However, the major start site of transcription is a G at position -36 and this shorter transcript significantly increases in response to DNA damage by UV-light. The -35 box (TTGTCA) and -10 box (TAGCGT) of the strong recA promoter are only 11 bp apart and this proximal promoter is almost identical to the strong, DNA damage-inducible promoter of Mycobacterium tuberculosis recA gene. We inspected the Streptomyces coelicolor database and found this type of promoter in the upstream regions of many (potentially) UV-inducible genes as well as some other genes/ORFs. Moreover, the DNA sequence between the predicted -35 and -10 boxes is also partially conserved. The consensus sequence for this new type of promoter in Streptomyces is TTGTCAGTGGC-N6-TAGggT.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Recombinases Rec A
/
Streptomyces
/
Proteínas de Bactérias
/
Transcrição Gênica
/
Regulação Bacteriana da Expressão Gênica
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Regiões Promotoras Genéticas
/
Genes Bacterianos
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
FEMS Microbiol Lett
Ano de publicação:
2002
Tipo de documento:
Article
País de afiliação:
Croácia