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: Restoration of mutability in non-mutable Escherichia coli carrying different plasmids.
    Author: Babudri N, Monti-Bragadin C.
    Journal: Mol Gen Genet; 1977 Oct 24; 155(3):287-90. PubMed ID: 202859.
    Abstract:
    N and I group plasmids, which increase methylmethane sulfonate (MMS) mutagenesis in lexA+ strains of E. coli WP2 may be divided into two classes: those restoring part of the mutability of lexA- stains (class I) and those leaving lexA- strains non-mutable (class II). Almost complete restoration of MMS mutability is obtained by class I plasmids in a partially suppressed lexA rnm strain, while clase II plasmids cause far fewer MMS revertants in this strain than in lexA+. A pair of class I and II plasmids in lexA- shows a synergistic effect on mutability. These two classes do not coincide with plasmid division into incompatibility groups.
    [Abstract] [Full Text] [Related] [New Search]