Notes on Genus: Microvirus
Type member: Enterobacteria phage fX174
This is one of the genera in the family Microviridae
. Members infect delta-purple bacteria.
Virions isometric (icosahedral), not enveloped, 26-32 nm in diameter with small surface projections.
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:
|A||58.7||Progeny ds replicative form synthesis; a shorter form A* (38.7 kDa) is translated from an alternative start codon|
|C||10.1||Progeny ssDNA synthesis|
|E||10.6||Cell lysis |