mamastrovirus

ママストロウイルス

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/01/17 20:58:09」(JST)

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Mamastrovirus
Virus classification
Group:	Group IV ((+)ssRNA)
Family:	Astroviridae
Genus:	Mamastrovirus
Type Species
Mamastrovirus 1

Mamastrovirus is a genus of viruses, in the family Astroviridae. Human, mammals, and vertebrates serve as natural hosts. There are currently 19 species in this genus including the type species Mamastrovirus 1. Diseases associated with this genus include: infantile gastroenteritis.

Taxonomy

Group: ssRNA(+)

Order: Unassigned

• Family: Astroviridae

  • Genus: Mamastrovirus 

    • Mamastrovirus 1
    • Mamastrovirus 2
    • Mamastrovirus 3
    • Mamastrovirus 4
    • Mamastrovirus 5
    • Mamastrovirus 6
    • Mamastrovirus 7
    • Mamastrovirus 8
    • Mamastrovirus 9
    • Mamastrovirus 10
    • Mamastrovirus 11
    • Mamastrovirus 12
    • Mamastrovirus 13
    • Mamastrovirus 14
    • Mamastrovirus 15
    • Mamastrovirus 16
    • Mamastrovirus 17
    • Mamastrovirus 18
    • Mamastrovirus 19

Structure

Viruses in Mamastrovirus are non-enveloped, with icosahedral and Spherical geometries, and T=3 symmetry. The diameter is around 35 nm. Genomes are linear and non-segmented, around 6.8-7kb in length.

Genus	Structure	Symmetry	Capsid	Genomic Arrangement	Genomic Segmentation
Mamastrovirus	Icosahedral	T=3	Non-Enveloped	Linear	Monopartite

Life Cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the positive stranded RNA virus replication model. Positive stranded rna virus transcription, using an unknown model of subgenomic rna transcription is the method of transcription. Translation takes place by -1 ribosomal frameshifting. Human, mammals, and vertebrates serve as the natural host. Transmission routes are fecal-oral.

Genus	Host Details	Tissue Tropism	Entry Details	Release Details	Replication Site	Assembly Site	Transmission
Mamastrovirus	Humans; mammals	Enterocytes	Cell receptor endocytosis	Budding	Cytoplasm	Cytoplasm	Oral-fecal

References

External Links

• Viralzone: Mamastrovirus
• ICTV

English Journal

• Complete genome sequence of a porcine astrovirus from South Korea.

• Lee S1, Jang G, Lee C.
• Archives of virology.Arch Virol.2015 Jul;160(7):1819-21. doi: 10.1007/s00705-015-2436-9. Epub 2015 Apr 29.
• Porcine astrovirus (PAstV) is broadly distributed in pigs in several countries worldwide. PAstVs belong to the genus Mamastrovirus and are divided into five genetically divergent types. This study presents a molecular characterization of PAstV identified in diarrheic piglets in South Korea. The comp
• PMID 25916612

• Molecular epidemiology and phylogenetic analysis of diverse bovine astroviruses associated with diarrhea in cattle and water buffalo calves in China.

• Alfred N1, Liu H, Li ML, Hong SF, Tang HB, Wei ZZ, Chen Y, Li FK, Zhong YZ, Huang WJ.
• The Journal of veterinary medical science / the Japanese Society of Veterinary Science.J Vet Med Sci.2015 Jul 1;77(6):643-51. doi: 10.1292/jvms.14-0252. Epub 2015 Feb 13.
• Astroviruses are the principal causative agents of gastroenteritis in humans and have been associated with diarrhea in other mammals as well as birds. However, astroviral infection of animals had been poorly studied. In the present study, 211 rectal swabs collected from cattle and water buffalo calv
• PMID 25716289

• Detection of a mammalian-like astrovirus in bird, European roller (Coracias garrulus).

• Pankovics P1, Boros Á1, Kiss T2, Delwart E3, Reuter G4.
• Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases.Infect Genet Evol.2015 Jun 18. pii: S1567-1348(15)00252-X. doi: 10.1016/j.meegid.2015.06.020. [Epub ahead of print]
• Astroviruses are small, non-enveloped viruses with positive sense, single-stranded RNA genomes. The family Astroviridae contains two genera, Mamastrovirus and Avastrovirus, which - based upon our current knowledge - infect mammals and birds, respectively. However, recent seroprevalence study indicat
• PMID 26096774

Related Links

• ViralZone: Mamastrovirus

VIRION. Non-enveloped, spherical, capsid of about 35 nm with T=3 icosahedral symmetry. Surface projections are small and surface appears rough, spikes protruding from the 30 vertices. VP90 capsid precursor protein undergoes C- terminal ...

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