منابع مشابه
Diversity of silver resistance genes in IncH incompatibility group plasmids.
Silver compounds are used as antimicrobial agents in medicine and bacteria that develop resistance to silver cations (Ag(+)) pose problems similar to those of antibiotic-resistant bacteria. The first set of Ag(+) resistance genes (sil) was from plasmid pMG101, now assigned to the IncHI incompatibility group. Questions of whether sil genes are unique to pMG101 or are more widely found, and wheth...
متن کاملClassification of R plasmids by incompatibility in Pseudomonas aeruginosa.
R plasmids identified in Pseudomonas aeruginosa strains isolated in our laboratories were classified by their incompatibility characters by using intraspecies conjugation in P. aeruginosa. The fertility factor, FP2, was compatible with R plasmids belonging to all groups, and was classified in a new group. From these data, the plasmids examined have been placed into seven or eight incompatibilit...
متن کاملIsolation and characterization of mutants of colicin plasmids E1 and E2 after Mu bacteriophage infection.
Cells colicinogenic for the colicin plasmids E1 or E2 (Col E1 and Col E2, respectively) were selected for a loss of colicin production after infection with bacteriophage Mu. Extrachromosomal deoxyribonucleic acid that was larger than the original colicin plasmids was found in such cells. A small insertion mutant in Col E1 deoxyribonucleic acid affecting active colicin production without affecti...
متن کاملEvolution of microcin V and colicin Ia plasmids in Escherichia coli.
Survey results and genotypic characterization of Escherichia coli strains demonstrate that the bacteriocins colicin Ia and microcin V coassociate in a strain more often than would be expected by chance. When these two bacteriocins co-occur, they are encoded on the same conjugative plasmid. Plasmids encoding colicin Ia and microcin V are nonrandomly distributed with respect to the genomic backgr...
متن کاملInactivation of ribosomes in vitro by colicin E 3 .
Cell-free protein synthesizing extracts incubated with purified preparations of colicin E(3) showed a marked decrease of their protein synthesizing activity. Incubation of ribosomes prepared from S-30 extracts with E(3) resulted in their inactivation. Their 16S RNA was found to lose a terminal fragment, similar in size to the fragment released upon in vivo treatment with E(3). Extracts derived ...
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ژورنال
عنوان ژورنال: Microbiology
سال: 1986
ISSN: 1350-0872,1465-2080
DOI: 10.1099/00221287-132-7-1859