Viral extrusion

Filamentous phages are released by a concerted mechanism of assembly and secretion called extrusion. The neosynthesized virions are coordinately exported as they are assembled at the cell surface in a secretory process that leaves the host cell fully viable. Extrusion requires three non-capsid proteins, two of them allowing translocation through the inner membrane (IM) and one secretin-like protein forming the transmembrane channel in the outer membrane (OM).

A viral single-stranded DNA binding protein coats progeny viral DNA molecules to generate the intracellular precursor for assembly of phage particles as they are extruded through the membranes of the bacterial host. The five structural proteins of the virus are anchored in the inner membrane before their incorporation into the phage particle. As assembly proceeds, the phage genome traverses the inner and outer membranes until the entire DNA molecule has been coated and extruded .

Matching UniProtKB/Swiss-Prot entries

22 entries grouped by strain (browse by keywords)

3 entries

Enterobacteria phage I2-2 (Bacteriophage I2-2) reference strain

Select_allDeselect_all
G4P_BPI22 Virion export protein (Gene 4 protein) (G4P)
G1P_BPI22 Gene 1 protein (G1P)
G3P_BPI22 Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)

3 entries

Enterobacteria phage IKe (Bacteriophage IKe) reference strain

Select_allDeselect_all
G3P_BPIKE Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)
G4P_BPIKE Virion export protein (Gene 4 protein) (G4P)
G1P_BPIKE Gene 1 protein (G1P)

3 entries

Enterobacteria phage If1 (Bacteriophage If1) reference strain

Select_allDeselect_all
G4P_BPIF1 Virion export protein (Gene 4 protein) (G4P)
G1P_BPIF1 Gene 1 protein (G1P)
G3P_BPIF1 Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)

3 entries

Enterobacteria phage M13 (Bacteriophage M13) reference strain

Select_allDeselect_all
G3P_BPM13 Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)
G1P_BPM13 Gene 1 protein (G1P)
G4P_BPM13 Virion export protein (Gene 4 protein) (G4P)

2 entries

Xanthomonas phage phiLf (Bacteriophage phi-Lf) reference strain

Select_allDeselect_all
G3P_BPPHL Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)
G1P_BPPHL Gene 1 protein (G1P)

1 entry

Pseudomonas phage Pf1 (Bacteriophage Pf1) reference strain

G3P_BPPF1 Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)

1 entry

Pseudomonas phage Pf3 (Bacteriophage Pf3) reference strain

G3P_BPPF3 Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)

3 entries

Enterobacteria phage f1 (Bacteriophage f1)

Select_allDeselect_all
G3P_BPF1 Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)
G1P_BPF1 Gene 1 protein (G1P)
G4P_BPF1 Virion export protein (Gene 4 protein) (G4P)

3 entries

Enterobacteria phage fd (Bacteriophage fd)

Select_allDeselect_all
G3P_BPFD Attachment protein G3P (Gene 3 protein) (G3P) (Minor coat protein)
G4P_BPFD Virion export protein (Gene 4 protein) (G4P)
G1P_BPFD Gene 1 protein (G1P)