Leviviridae

From MicrobeWiki, the student-edited microbiology resource

A Viral Biorealm page on the family Leviviridae

Contents 1 Baltimore Classification 1.1 Higher order taxa 1.2 Genera 2 Description and Significance 3 Genome Structure 4 Virion Structure of a Leviviridae 5 Reproduction Cycle of a Leviviridae in a Host Cell 6 Viral Ecology & Pathology 7 References

Baltimore Classification

Higher order taxa

Viruses; ssRNA positive-strand viruses, no DNA stage; Leviviridae

Genera

Allolevivirus, Levivirus

Description and Significance

Leviviridae is a (+)sense single-stranded RNA virus. It is a bacteriophage and MS2 and QB infect E. coli.

Genome Structure

The genome of leviviridae is not segmented and contains a single molecule of linear positive-sense, single-stranded RNA. The complete genome is 3466-4276 nucleotides long. The genome has a base ration of 50 % guanine, 50 % adenine. (source: ICTV dB Descriptions)

Virion Structure of a Leviviridae

The bacteriophages consist of a capsid and are not enveloped. The virions are not tailed. The capsid is round and exhibits icosahedral symmetry (T=3). The isometric capsid has a diameter of about 26 nm. The capsids appear round and each capsid consists of 32 capsomers. (source: ICTV dB Descriptions)

Reproduction Cycle of a Leviviridae in a Host Cell

Viral Ecology & Pathology

References

ICTV dB Descriptions