Notes on Genus: Microvirus

icosahedra

Type member: Enterobacteria phage fX174

Contents

Members of this Genus
General Description
Morphology
Electron Micrograph
Genome
Genus Genomic Organization
Genome Map
Type Member Genomic Organization
All Known Sequences
Curated Sequences

General Description

This is one of the genera in the family Microviridae. Members infect delta-purple bacteria.

Morphology

Virions isometric (icosahedral), not enveloped, 26-32 nm in diameter with small surface projections.

Genome

Monopartite, positive sense, circular ssDNA 4.5-6 kb in length.

Genus Genomic Organization

About 10 ORFs are translated from closely spaced or overlapping genes.

Type Member Genomic Organization

There are 10 closely spaced or overlapping ORFs:
ORFkDa Function
A58.7Progeny ds replicative form synthesis; a shorter form A* (38.7 kDa) is translated from an alternative start codon
B13.8Procapsid morphogenesis
K6.4Unkown
C10.1Progeny ssDNA synthesis
D16.9Procapsid scaffold
E10.6Cell lysis
J4.2Packaging
F48.5Injection
G19.0Attachment
H34.4Spike protein