Results 191 to 200 of about 6,362 (205)

Cyclization of coliphage 186 DNA

Journal of Molecular Biology, 1967
Equilibrium and kinetic studies have been made on the cyclization of coliphage 186 DNA. In 0·13 m -Na + , the melting temperature of the cohesive ends ( T m ), i.e. the midpoint of the linear monomer to cyclic monomer transition, occurs at 63°C, which is 12°C above that of λb2b5c DNA in the same medium.
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Multiplication of Coliphage at High Concentration

Nature, 1949
THE 'single-step' method devised by Ellis and Delbruck1 has proved of immense value in the hands of a number of workers in studying the multiplication of various bacteriophages ; but it was devised specifically to investigate the behaviour of bacteria and adsorbed phage at high dilution, and gives no direct information about the more complex situation ...
D E, DOLBY, J W, CZEKALOWSKI
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Three Star Mutants of Coliphage T2

Journal of General Microbiology, 1958
SUMMARY: Star mutants of coliphages produce irregularly-shaped plaques which harbour mixed phage clones consisting of two or more phage genotypes: one type which forms star plaques identical in morphology and genetic constitution to those of the primary star mutant and other types which form regular genetically-homogeneous plaques.
E, McFALL, G S, STENT
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T7 coliphage inactivation by nitrous acid

Biochimica et Biophysica Acta (BBA) - Nucleic Acids and Protein Synthesis, 1970
Abstract 1. The inactivation of the T7 coliphage by HNO2 is a one-hit process. The inactivation rate is proportional to the HNO2 concentration and the length of treat ment; it increases when the pH is lowered although, in the absence of HNO2, the effect of H+ alone is insignificant. 2.
P, Dussault, J M, Bourgault, W G, Verly
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Physical map of coliphage BF23 DNA

Gene, 1986
Abstract Restriction endonuclease cleavage maps for BamHI, EcoRI, HindIII, PstI, and SalI have been determined for the Escherichia coli bacteriophage BF23 DNA.
K J, Heller, V, Krauel
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Capsular protection against virulent coliphage infection

Biotechnology and Bioengineering, 1970
AbstractThe ecological significance of bacterial capsules when virulent bacteriophages are present was explored by exposing continuous cultures of Escherichia coli ATCC 11303, in various stages of capsulation and clumping, to a virulent coliphage, T2. Only partial protection was provided by capsulation, but this could be a factor affecting survival in ...
M J, Paynter, H R, Bungay
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Transcription map of satellite coliphage P4

Virology, 1978
Abstract Satellite phage P4 carries an 11-kilobase genome which codes for both early and late proteins. The synthesis of P4 late proteins is prevented by mutations in P4 genes α and δ and is stimulated by the presence of the helper phage P2 (Barrett et al. , 1976; Souza et al. , 1977a).
J D, Harris, R, Calendar
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The Calcium Requirement of Coliphage T5

The Journal of Immunology, 1949
Abstract Stassano and de Beaufort (1) discovered that the growth of certain phages was inhibited by the presence of citrate in the culture medium, and that this inhibition could be overcome by the addition of calcium salts. Bordet and Renaux (2) investigated a strain of Shiga phage which was unable to lyse the host cells in the presence ...
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Vegetative DNA of temperate coliphage P2

Molecular and General Genetics MGG, 1971
In order to study P2 DNA synthesis by incorporation of tritium-labeled thymine, mitomycin C has been used to selectively suppress host DNA synthesis. Several conditional lethal mutants of P2 (temperature-sensitive as well as amber) have been tested for their ability to synthesize DNA under non-permissive conditions. Mutants representing the two “early”
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Interferon Production by T4 Coliphage

Nature, 1970
W J, Kleinschmidt, R J, Douthart, E B, Murphy   +2 more
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