Article
Species-dependent phenotypes of replication-temperature-sensitive trfA mutants of plasmid RK2: a codon-neutral base substitution stimulates temperature sensitivity by leading to reduced levels of trfA expression.
Journal of bacteriology - 1 Aug 1998
Karunakaran P, Blatny J M, Ertesvåg H, Valla S
Abstract excerpt
TrfA is the only plasmid-encoded protein required for initiation of replication of the broad-host-range plasmid RK2. Here we describe the isolation of four trfA mutants temperature sensitive for replication in Pseudomonas aeruginosa. One of the mutations led to substitution of arginine 247 with cysteine. This mutant has been previously described to be temperature sensitive for replication, but poorly functional,...
Topics
- Amino Acid Substitution
- Arginine
- Bacterial Proteins
- Conjugation, Genetic
- Cysteine
- DNA Replication
- Escherichia coli
- Escherichia coli Proteins
- Mutagenesis, Site-Directed
- Phenotype
- Plasmids
- Point Mutation
- Protein Biosynthesis