𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Expression of the plasmid pKM101-determined DNA repair system in recA − and lex − strains of Escherichia coli

✍ Scribed by Monti-Bragadin, C. ;Babudri, N. ;Samer, L.

Publisher
Springer
Year
1976
Tongue
English
Weight
292 KB
Volume
145
Category
Article
ISSN
0026-8925

No coin nor oath required. For personal study only.

✦ Synopsis

pKM101, a plasmid R factor of the N compatibility group increases methylmethane sulfonate mutagenesis and diminishes UV-killing in recA+ LEX+ and recA+ lex- strains, , but not in recA-lex+ strains. The induction of a "reclex" dependent colicin is not present in lex- strains carrying the pKM101 factor. These facts indicate that pKM101 acts through an error-prone DNA repair system which is recA+ dependent, but not lex+ dependent.

📜 SIMILAR VOLUMES

Mutagenesis and repair deficiencies of E
Mutagenesis and repair deficiencies of Escherichia coli umuC mutants are suppressed by the plasmid pKM101
✍ Walker, Graham C. ;Dobson, Patricia P. 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 737 KB

The presence of the drug resistance plasmid pKM101 restored the ability of Escherichia coli umuC mutant strains to be mutated by methyl methanesulfonate. Inducible (Weigle) reactivation of ultraviolet-irradiated bacteriophage lambda was not observed in uvrA6 umuC mutant strains lacking pKM101 but wa

Host cell–plasmid interactions in the ex
Host cell–plasmid interactions in the expression of DNA donor activity by F+ strains of Escherichia coli K-12
✍ Philip M. Silverman 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 809 KB

## Abstract DNA transfer directly from cell to cell (conjugation) is common among prokaryotes, particularly Gram‐negative bacteria like Escherichia coli. The phenomenon invariably requires a set of plasmid genes in the DNA donor cell. In addition, E. coli itself makes limited and specific contribut

Variable expression of the ssb-1 allele
Variable expression of the ssb-1 allele in different strains of Escherichia coli K12 and B: Differential suppression of its effects on DNA replication, DNA repair and ultraviolet mutagenesis
✍ Lieberman, Howard B. ;Witkin, Evelyn M. 📂 Article 📅 1981 🏛 Springer 🌐 English ⚖ 826 KB

We have transduced the mutant allele ssb-1, which encodes a temperature-sensitive single-strand DNA binding protein (SSB), into several Escherichia coli strains, and have examined colony-forming ability, DNA replication, sensitivity to ultraviolet light (UV) and UV-induced mutability at the nonpermi

Inactivation of lacZ gene expression by
Inactivation of lacZ gene expression by UV light and bound DNA photolyase implies formation of extended complexes in the genomes of specific Escherichia coli strains
✍ Li, B. H. ;Kwasniewski, M. ;Bockrath, R. 📂 Article 📅 1991 🏛 Springer 🌐 English ⚖ 1011 KB

In Escherichia coli strains WU and CS101, UV inactivation of lacZ gene expression is more effective when the cells contain amplified DNA photolyase, and flash photoreactivation (fPR) after 15 min of metabolism does not reverse inactivation by the photolyase-dimer complexes. In other strains, also st