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 .

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Matching UniProtKB/Swiss-Prot entries

22 entries grouped by protein (browse by keywords)

7 entries

Gene 1 protein (G1P)

Select_allDeselect_all
G1P_BPI22
Enterobacteria phage I2-2 (Bacteriophage I2-2) reference strain
G1P_BPIF1
Escherichia phage If1 (Bacteriophage If1) reference strain
G1P_BPIKE
Salmonella phage IKe (Bacteriophage IKe) reference strain
G1P_BPM13
Enterobacteria phage M13 (Bacteriophage M13) reference strain
G1P_BPPHL
Xanthomonas phage phiLf (Bacteriophage phi-Lf) reference strain
G1P_BPF1
Enterobacteria phage f1 (Bacteriophage f1)
G1P_BPFD
Enterobacteria phage fd (Bacteriophage fd)

9 entries

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

Select_allDeselect_all
G3P_BPI22
Enterobacteria phage I2-2 (Bacteriophage I2-2) reference strain
G3P_BPIF1
Escherichia phage If1 (Bacteriophage If1) reference strain
G3P_BPIKE
Salmonella phage IKe (Bacteriophage IKe) reference strain
G3P_BPM13
Enterobacteria phage M13 (Bacteriophage M13) reference strain
G3P_BPPF1
Pseudomonas phage Pf1 (Bacteriophage Pf1) reference strain
G3P_BPPF3
Pseudomonas phage Pf3 (Bacteriophage Pf3) reference strain
G3P_BPPHL
Xanthomonas phage phiLf (Bacteriophage phi-Lf) reference strain
G3P_BPF1
Enterobacteria phage f1 (Bacteriophage f1)
G3P_BPFD
Enterobacteria phage fd (Bacteriophage fd)

6 entries

Virion export protein (Gene 4 protein) (G4P)

Select_allDeselect_all
G4P_BPI22
Enterobacteria phage I2-2 (Bacteriophage I2-2) reference strain
G4P_BPIF1
Escherichia phage If1 (Bacteriophage If1) reference strain
G4P_BPIKE
Salmonella phage IKe (Bacteriophage IKe) reference strain
G4P_BPM13
Enterobacteria phage M13 (Bacteriophage M13) reference strain
G4P_BPF1
Enterobacteria phage f1 (Bacteriophage f1)
G4P_BPFD
Enterobacteria phage fd (Bacteriophage fd)