- Plasmavirus
Taxobox color violet image Plasmavirus.JPG image width 240px image caption EM of a Plasmavirus name Plasmavirus virus group i familia Plasmaviridae genus Plasmavirus subdivision ranks Species subdivision Mycoplasmatales virus laidlawii 1 L1 br Mycoplasmatales virus laidlawii 2 L2 br Mycoplasmatales virus laidlawii 3 L3 br Mycoplasmatales virus laidlawii 51 L51 br Mycoplasmatales virus laidlawii O1 O1 br The Plasmaviridae is a family of bacteriophage s, viruses that infect bacteria. Virions have an envelope, a nucleoprotein complex, and a capsid. They are 50 125 nm in diameter with a baggy or loose membrane. All species known in this family have been isolated from species in the class Mollicutes . Acholeplasma virus L2 is the type species. This family has been very poorly studied and little is known about these viruses. Genome The genome is condensed, nonsegmented and consists of a single molecule of circular, supercoiled double stranded DNA, 12 kilobase pairs in length. The genome has a rather high guanine G cytosine C content of 32 . ref B chen Osmond, C. Ed 2003 . 00.053. Plasmaviridae. In ICTVdB The Universal Virus Database, version 3. B chen Osmond, C. Ed , ICTVdB Management, The Earth Institute and Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA. ref It encodes at least 15 proteins, of which at least four are structural proteins embedded in the membrane. Infection A productive infectious cycle begins before a lysogenic cycle establishes the virus in the infected bacteria. After initial infection of the viral genome the virus may become latent within the host. Lysogeny involves integration into the host chromosome. Literature references External links http www.expasy.org viralzone all by species 146.html Viralzone Plasmaviridae Category DNA viruses Category Bacteriophages Virus stub ar ca Plasmav rid de Plasmaviridae es Plasmaviridae zh ... more details
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