Tale of two spikes in bacteriophage PRD1

Tutkimustuotos: ArtikkelijulkaisuArtikkeliTieteellinenvertaisarvioitu

Abstrakti

Structural comparisons between bacteriophage PRD1 and adenovirus have revealed an evolutionary relationship that has contributed significantly to current ideas on virus phylogeny. However, the structural organization of the receptor-binding spike complex and how the different symmetry mismatches are mediated between the spike-complex proteins are not clear. We determined the architecture of the PRD1 spike complex by using electron microscopy and three-dimensional image reconstruction of a series of PRD1 mutants. We constructed an atomic model for the full-length P5 spike protein by using comparative modeling. P5 was shown to be bound directly to the penton base protein P31. P5 and the receptor-binding protein P2 form two separate spikes, interacting with each other near the capsid shell. P5, with a tumor necrosis factor-like head domain, may have been responsible for host recognition before capture of the current receptor-binding protein P2.
Alkuperäiskielienglanti
LehtiProceedings of the National Academy of Sciences of the United States of America
Vuosikerta104
Numero16
Sivut6666-6671
Sivumäärä6
ISSN0027-8424
DOI - pysyväislinkit
TilaJulkaistu - 2007
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 118 Biotieteet

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