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Normal cellular replication of Sendai virus without the trans-frame, nonstructural V protein - PubMed

  • ️Wed Jan 01 1997

. 1997 Feb 3;228(1):55-62.

doi: 10.1006/viro.1996.8354.

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Normal cellular replication of Sendai virus without the trans-frame, nonstructural V protein

C Delenda et al. Virology. 1997.

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Abstract

The Sendai virus V protein is a nonstructural trans-frame protein in which a highly conserved cys-rich Zn2+-binding domain is fused to the N-terminal half of the P protein via mRNA editing. Using a recently developed system in which infectious virus is recovered from cDNA, we have engineered a virus in which a translation stop codon was placed at the beginning of the V ORF. Translation of the V(stop) mRNA yields a W-like protein, i.e., a protein composed of the N-terminal half of the P protein alone which is naturally expressed at low levels from the P gene. This V-minus but W-augmented virus was found to replicate normally in cell culture and embryonated chicken eggs. The Sendai virus V protein is thus an accessory protein, and the cys-rich Zn2+-binding domain is likely to function in a specialized role during virus propagation.

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