trichomonasvirus trichomonasvirus trichomonasvirus is a genus of viruses, in the family totiviridae. the protozoan parasite trichomonas vaginalis serves as the natural host. there are four species in this genus. trichomonasvirus cryo-em image of protein surface of trichomonas vaginalis virus 1 virus classification (unranked): virus realm: riboviria kingdom: orthornavirae phylum: duplornaviricota class: chrymotiviricetes order: ghabrivirales family: totiviridae genus: trichomonasvirus taxonomy the following four species are assigned to the genus: trichomonas vaginalis virus 1 trichomonas vaginalis virus 2 trichomonas vaginalis virus 3 trichomonas vaginalis virus 4 structure viruses in trichomonasvirus are non-enveloped, with icosahedral geometries, and t=2 symmetry. the diameter is around 36 nm. genomes are linear and non-segmented, around 4.6-4.9kb in length. the genome has 2 open reading frames. genusstructuresymmetrycapsidgenomic arrangementgenomic segmentation trichomonasvirusicosahedralt=2non-envelopedlinear life cycle viral replication is cytoplasmic. entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. replication follows the double-stranded rna virus replication model. double-stranded rna virus transcription is the method of transcription. protozoan parasite trichomonas vaginalis serve as the natural host. genushost detailstissue tropismentry detailsrelease detailsreplication siteassembly sitetransmission trichomonasvirusprotozoaendocytosisunknownunknowncytoplasmcytoplasmunknown