These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Spore photoproduct lyase operon (splAB) regulation during Bacillus subtilis sporulation: modulation of splB-lacZ fusion expression by P1 promoter mutations and by an in-frame deletion of splA.
    Author: Pedraza-Reyes M, Gutiérrez-Corona F, Nicholson WL.
    Journal: Curr Microbiol; 1997 Mar; 34(3):133-7. PubMed ID: 9009064.
    Abstract:
    EsigmaG-dependent transcription of the splAB operon in the forespore at stage III of Bacillus subtilis sporulation initiates from two promoters, P1 preceding splA (major) and P3 preceding splB (minor). To explore the possible role of splA in controlling splB-encoded spore photoproduct lyase expression, we measured beta-galactosidase from splB-lacZ fusions integrated at the SPbeta prophage locus which contained point mutations or deletions which either inactivated or physically removed P1 and/or splA. Paradoxically, inactivation of P1 by point mutation or its removal by deletion from upstream resulted in elevated beta-galactosidase expression of the resulting splB-lacZ fusion, as did an in-frame deletion of splA which left P1 and P3 intact;however, expression of all fusions remained sporulation specific and EsigmaG dependent.
    [Abstract] [Full Text] [Related] [New Search]