title: The vaccinia virus B9R protein is a 6 kDa intracellular protein that is non-essential for virus replication and virulence.
abstract: Vaccinia virus (VV) strain Western Reserve gene B9R is shown to encode an intracellular 6 kDa protein that is expressed late during the infectious cycle. In vitro transcription and translation produced two polypeptides in the presence of microsomal membranes, but only the larger protein in the absence of membranes. The smaller protein sedimented with microsomes during centrifugation, suggesting it was inserted into the lipid membrane or into the microsomal lumen via the N-terminal hydrophobic signal sequence that was subsequently cleaved proteolytically. A VV mutant lacking B9R was constructed and found to replicate normally in cell culture and two in vivo models.
authors.affiliation: Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK1.
authors.forename: Nicola
authors.initials: N
authors.lastname: Price
authors.affiliation: Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK1.
authors.forename: David C
authors.initials: DC
authors.lastname: Tscharke
authors.affiliation: Sir William Dunn School of Pathology, University of Oxford, South Parks Road, Oxford OX1 3RE, UK1.
authors.forename: Geoffrey L
authors.initials: GL
authors.lastname: Smith
mesh_terms: D001483:Base Sequence; D008969:Molecular Sequence Data; D008970:Molecular Weight; D014616:Vaccinia virus / Q000737:chemistry* / Q000472:pathogenicity / Q000502:physiology; D014764:Viral Proteins / Q000032:analysis* / Q000235:genetics / Q000502:physiology; D014774:Virulence; D014779:Virus Replication
chemical_list: D014764:Viral Proteins