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

  1. Adsorption: the phage attaches to the target cell through its tail fibers.
  2. Ejection of the viral DNA and the viral RNA polymerase (vRNAP) into host cell cytoplasm .
  3. Transcription by the vRNAP of the phage early genes.
  4. Replication of genomic DNA. Transcription (by the host RNAP) and translation of late genes.
  5. Assembly of an empty procapsid and packaging of the genome.
  6. Viral tail fibers assembly and viral tail assembly.
  7. Mature virions are released from the cell by lysis.

Matching UniProtKB/Swiss-Prot entries

8 entries grouped by strain (browse by keywords)

All proteins are shown (view only 7 complete proteome entries)

7 entries

Enterobacteria phage N4 (Bacteriophage N4) reference strain

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CAPSD_BPN4Major capsid protein (Gene product 56) (gp56) (Major head protein)
GP8_BPN4Gene product 8 (gp8)
NCTSP_BPN4Non-contractile tail sheath (Gene product 65) (Gp65)
PORTL_BPN4Probable portal protein (94 kDa protein) (Gene product 59) (gp59) (Head-to-tail ...
RPOLV_BPN4Virion DNA-directed RNA polymerase (vRNAP) (EC 2.7.7.6) (Gene product 50) (gp50)
YLF1_BPN4Uncharacterized protein Gp1 (12 kDa protein in genome left end) (ORF 1)
YLF2_BPN4Uncharacterized protein Gp2 (ORF 2)

1 entry

Pseudomonas phage KPP21


CAPSD_BPK21Major capsid protein (Major virion protein)