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  • Title: Characterization of two Salmonella newport bacteriophages.
    Author: Moazamie N, Ackermann HW, Murthy MR.
    Journal: Can J Microbiol; 1979 Sep; 25(9):1063-72. PubMed ID: 540262.
    Abstract:
    Salmonella newport phages 16--19 and 7--11 have very long heads and are members of two rare and so far little-known phage groups. Both produce various morphological aberrations. Preparations of phage 7--11 contain numerous polyheads and about 0.4% short heads belonging to nine size classes. In addition, one giant phage particle was observed. The head of phage 7--11 seems to be an icosahedron which became elongated by adding successive rows of subunits. Phages 16--19 and 7--11 have buoyant densities in CsCl of 1.43 and 1.48 g/mL and particle weights of 103 and 204 x 10(6) respectively. Both viruses contain double-stranded DNA, internal proteins, and sugars. Phage 16--19 contains 46.5% DNA of 35 x 10(6) molecular weight, and glucose. Phage 7--11 contains 47.5% DNA of 108 x 10(6) molecular weight, and mannose. Base compositions of phage and S. newport DNAs were determined from buoyant densities, melting point, and acid hydrolysis. Phage 16--19 contains 5.4% 5-methylcytosine.
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