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PMID:15331712

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Citation

Jaatinen, ST, Viitanen, SJ, Bamford, DH and Bamford, JK (2004) Integral membrane protein P16 of bacteriophage PRD1 stabilizes the adsorption vertex structure. J. Virol. 78:9790-7

Abstract

The icosahedral membrane-containing double-stranded DNA bacteriophage PRD1 has a labile receptor binding spike complex at the vertices. This complex, which is analogous to that of adenovirus, is formed of the penton protein P31, the spike protein P5, and the receptor binding protein P2. Upon infection, the internal phage membrane transforms into a tubular structure that protrudes through a vertex and penetrates the cell envelope for DNA injection. We describe here a new class of PRD1 mutants lacking virion-associated integral membrane protein P16. P16 links the spike complex to the viral membrane and is necessary for spike stability. We also show that the unique vertex used for DNA packaging is intact in the P16-deficient particle, indicating that the 11 adsorption vertices and the 1 portal vertex are functionally and structurally distinct.

Links

PubMed PMC514979 Online version:10.1128/JVI.78.18.9790-9797.2004

Keywords

Amino Acid Sequence; Bacteriophage PRD1/genetics; Bacteriophage PRD1/pathogenicity; Bacteriophage PRD1/physiology; Bacteriophage PRD1/ultrastructure; Genes, Viral; Genetic Complementation Test; Microscopy, Electron; Molecular Sequence Data; Mutation; Phenotype; Receptors, Virus/physiology; Salmonella enterica/virology; Viral Matrix Proteins/genetics; Viral Matrix Proteins/physiology

Significance

Annotations

Gene product Qualifier GO Term Evidence Code with/from Aspect Extension Notes Status

BPPRD:P2

GO:0019012: virion

ECO:0000314:

C

Figure 5A.

complete
CACAO 7804

BPPRD:P2

part_of

GO:0019012: virion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete

BPPRD:P5

GO:0019012: virion

ECO:0000314:

C

Figure 5A.

complete
CACAO 7810

BPPRD:P5

part_of

GO:0019012: virion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete

BPPRD:VP31

GO:0019012: virion

ECO:0000314:

C

Figure 5A.

complete
CACAO 7811

BPPRD:VP31

part_of

GO:0019012: virion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete

BPPRD:VP16

part_of

GO:0019012: virion

ECO:0000315: mutant phenotype evidence used in manual assertion

C

Seeded From UniProt

complete

BPPRD:VP16

GO:0019012: virion

ECO:0000315:

C

Figure 2.

complete
CACAO 7789

BPPRD:PKG6

GO:0019012: virion

ECO:0000314:

C

Figure 5B.

complete
CACAO 7813

BPPRD:PKG6

part_of

GO:0019012: virion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete

BPPRD:PKG9

GO:0019012: virion

ECO:0000314:

C

Figure 5B.

complete
CACAO 7814

BPPRD:PKG9

part_of

GO:0019012: virion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete

BPPRD:PKG22

GO:0019012: virion

ECO:0000314:

C

Figure 5B.

complete
CACAO 7815

BPPRD:PKG22

part_of

GO:0019012: virion

ECO:0000314: direct assay evidence used in manual assertion

C

Seeded From UniProt

complete


See also

References

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