Taxobox color violet virus group III familia Cystoviridae genus CystovirusCystovirus is a genus of dsRNA virus that infect certain Gram negative bacteria . Characteristics All cystoviruses are distinguished by their three strands analogous to chromosomes of dsRNA , totalling 14 Base pair Length unit kb in length and their protein and lipid outer layer. No other bacteriophage has any lipid in its outer coat, though the DNA virus Tectiviridae and the DNA virus Corticoviridae have lipids within their capsid s. Most identified cystoviruses infect Pseudomonas species, but this is likely biased due to the method of screening and enrichment. ref name Silander 2005 The type species is Pseudomonas phage 6 , but there are many other members of this family. 7, 8, 9, 10, 11, 12, and 13 have been identified and named, ref name Mindich 1999 cite journal author Mindich L, Qiao X, Qiao J, Onodera S, Romantschuk M, Hoogstraten D title Isolation of additional bacteriophages with genomes of segmented double stranded RNA journal J. Bacteriol. volume 181 issue 15 pages 4505 8 year 1999 month August pmid 10419946 pmc 103579 url http jb.asm.org cgi content full 181 15 4505 ref but other cystoviruses have also been isolated. ref name Silander 2005 cite journal author Silander OK, Weinreich DM, Wright KM, et al. title Widespread genetic exchange among terrestrial bacteriophages journal Proc. Natl. Acad. Sci. U.S.A. volume 102 issue 52 pages 19009 14 year 2005 month December pmid 16365305 pmc 1323146 doi 10.1073 pnas.0503074102 url http www.pnas.org cgi content full 102 52 19009 ref Members of the Cystoviridae appear to be most closely related to the Reoviridae , ref name Butcher 1997 cite journal author Butcher SJ, Dokland T, Ojala PM, Bamford DH, Fuller SD title Intermediates in the assembly pathway of the double stranded RNA virus phi6 journal EMBO J. volume 16 issue 14 pages 4477 87 ... viralzone all by species 586.html Viralzone Cystovirus Baltimore classification Category RNA ... more details
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