Now showing items 1-9 of 9
Evidence for the utilization of host tRNA(m5 U)methylase to modify tRNA coded by phage T4
(Elsevier, 1973-04)
Mutants of Escherichia coli defective only in the biosynthesis of 5-methyluridine (ribothymidine) in their transfer ribonucleic acid (tRNA) were employed to investigate whether phage T4 induces its own tRNA (m5U)methylase ...
Cooperative effects of bacterial mutations affecting [lambda] N gene expression : II. Isolation and characterization of mutations in the rif region
(Elsevier, 1976-08)
We report the isolation and initial characterization of a class of mutations, Snu, that map near the rif locus on the Escherichia coli chromosome. Snu mutations inhibit the growth of phage [lambda], an effect primarily ...
Cooperative effects of bacterial mutations affecting [lambda] N gene expression : I. Isolation and characterization of a nusB mutant
(Elsevier, 1976-08)
We report the isolation and characterization of an Escherichia coli mutant which limits the growth of phage [lambda] by inhibiting the expression of the N gene regulatory function. The mutation involved maps near minute ...
Plasmid transfer in Streptococcus faecalis: Production of multiple sex pheromones by recipients
(Elsevier, 1979-07)
In a previous report (1978, Proc. Nat. Acad. Sci. USA 75, 3479-3483), we showed that recipient strains of Streptococcus faecalis excrete a heat-stable substance (sex pheromone) which induces donor cells carrying certain ...
Interference with the expression of the N gene function of phage [lambda] in a mutant of Escherichia coli
(Elsevier, 1973-01)
An Escherichia coli mutant nus, which inhibits the growth of [lambda] by inhibiting the expression of the [lambda] N gene product, has been further characterized. The N protein regulates phage development by stimulating ...
Genetic characterization of a bacterial locus involved in the activity of the N function of phage [lambda]
(Elsevier, 1974-03)
We report the genetic mapping of a locus of the Escherichia coli chromosome involved in the expression of the N gene function of phage [lambda]. This phage specified function regulates the subsequent transcription of most ...
Growth of [lambda] variants with added or altered promoters in N-limiting bacterial mutants: Evidence that an N recognition site lies in the PR promoter
(Elsevier, 1976-05)
Transcription of the [lambda] genome, initiating at the early rightward promoter (PR), traverses the cII-O-P operon and extends through the Q gene. In the absence of the [lambda] N function, this transcription is prematurely ...
Effect of T4 modification of host valyl-tRNA synthetase on enzyme action in vivo
(Elsevier, 1975-10)
It has previously been found that bacteriophage T4 modifies the valyl-tRNA synthetase of its host; in this work we have examined the effects of this modification on the action of the enzyme in vivo. For this purpose we ...
[lambda]imm[lambda][middle dot]434: A phage with a hybrid immunity region
(Elsevier, 1973-11)
The genomes of coliphages [lambda] and [lambda]imm434 are identical with the exception of the immunity region, which codes for the respective repressors and corresponding operators. Although previous genetic studies failed ...