Taxobox color violet image image width image caption name Corticovirus virus group i familia Corticoviridae genus Corticovirus subdivision ranks Species subdivision Pseudoalteromonas phage PM2 br The Corticoviridae is a family of phages with a double stranded DNA genome that infect bacteria. The name is derived from Latin cortex , corticis meaning crust or bark . The family has a single genus Corticovirus. The type species is Alteromonas phage PM2, which is currently the only known species in this genus. However, prophages closely related to PM2 are abundant in the genomes of aquatic bacteria, suggesting that the ecological importance of corticoviruses might be underestimated. ref cite journal author Krupovic M, Bamford DH title Putative prophages related to lytic tailless marine dsDNA phage PM2 are widespread in the genomes of aquatic bacteria journal BMC Genomics year 2007 volume 8 pages 236 doi 10.1186 1471 2164 8 236 pmid 17634101 url http www.biomedcentral.com content pdf 1471 2164 8 236.pdf ref This family of viruses has been little studied and not much is known about it. Virology The virons consist of a round, icosahedral , non enveloped capsid of a diameter of 60 nanometers nm and an internal lipid cell membrane membrane located between outer and inner protein shell ref Kiveld, H.M., Kalkkinen, N. and Bamford, D.H. 2002 . Bacteriophage PM2 has a protein capsid surrounding a spherical lipid protein core. J. Virol., 76, 8169 8178. ref . The shells are composed of three layers whose surfaces reveals a pattern with distinctive features ref Kiveld, H.M., M nnist , R.H., Kalkkinen, N. and Bamford, D.H. 1999 . Purification and protein composition of PM2, the first lipid containing bacterial virus to be isolated. Virology, 262, 364 374. ref , including bush like spikes protruding from the twelve vertex geometry vertices ref Harrison, S.C., Caspar, D.L., Camerini Otero, R.D. and Franklin, R.M. 1971 . Lipid and protein arrangement in bacteriophage PM2. Nat. New Biol., 229 ... more details
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