GIT VIRUSES - created from Mind Map

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Rotavirus

Enterovirus

Adenovirus F (40,41)

Astrovirus

Norovirus

Naked

Multilayered icosahedral protein capsid

11 segment of double-stranded RNA (dsRNA)

6 distinct group (A-F)

Family: Rotaviridae

has RNA-dependent RNA polymerase capable of producing capped RNA transcripts

Capable of genetic reassortment

75-80nm in diameter

Family: Picornaviridae

Naked

Icosahedral protein capsid

(+) Single-stranded RNA (ssRNA)

has RNA-dependent RNA polymerase capable of producing capped RNA transcripts

Example

Polio virus

Hepatitis A

causative agent for POLIOMYELITIS

50nm

27-32nm

Family: Adenoviridae

Naked

Icosahedral protein capsid

Double-stranded DNA (dsDNA)

Largest naked viruses

90-100nm

Family: Astroviridae

(+) Single-stranded RNA (ssRNA)

Naked

Icosahedral capsid

28-35nm

Gastroenteritis in young children

a characteristic five- or sixpointed star-like surface structure

Family: Caliciviridae

Species: Norwalk virus

Naked

(+) Single-stranded RNA (ssRNA)

Icosahedral capsid

23-40nm