Enquatrovirus (taxid:371730)
former names: N4-likevirus, N4likevirus, N4virus
VIRION
Non-enveloped, head-tail structure. The icosahedral capsid is about 70 nm in diameter, with a T=9 icosahedral symmetry 
. The virion contains about 4 copies of a viral RNA polymerase (vRNAP) .
GENOME
Linear, dsDNA genome of about 70 kb encoding 72 genes.
GENE EXPRESSION
REPLICATION
CYTOPLASMIC
- Adsorption: the phage attaches to the target cell through its tail fibers.
- Ejection of the viral DNA and the viral RNA polymerase (vRNAP) into host cell cytoplasm .
- Transcription by the vRNAP of the phage early genes.
- Replication of genomic DNA. Transcription (by the host RNAP) and translation of late genes.
- Assembly of an empty procapsid and packaging of the genome.
- Viral tail fibers assembly and viral tail assembly.
- Mature virions are released from the cell by lysis.
Insight into DNA and protein transport in double-stranded DNA viruses: the structure of bacteriophage N4
Kyung H. Choi, Jennifer McPartland, Irene Kaganman, Valorie D. Bowman, Lucia B. Rothman-Denes, Michael G. Rossmann
J. Mol. Biol. May 2, 2008; 378: 726-736
Kyung H. Choi, Jennifer McPartland, Irene Kaganman, Valorie D. Bowman, Lucia B. Rothman-Denes, Michael G. Rossmann
J. Mol. Biol. May 2, 2008; 378: 726-736
Matching UniProtKB/Swiss-Prot entries
(all links/actions below point to uniprot.org website)7 entries grouped by protein
1 entry
Major capsid protein (Gene product 56) (gp56) (Major head protein)
1 entry
Gene product 8 (gp8)
1 entry
Non-contractile tail sheath (Gene product 65) (Gp65)
1 entry
Probable portal protein (94 kDa protein) (Gene product 59) (gp59) (Head-to-tail connector)
1 entry
Virion DNA-directed RNA polymerase (vRNAP) (EC 2.7.7.6) (Gene product 50) (gp50)
1 entry
Uncharacterized protein Gp1 (12 kDa protein in genome left end) (ORF 1)
1 entry