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  • Role of BC loop residues in structure, function and antigenicity of the West Nile virus envelope protein receptor-binding domain III.

    Virology. 403(1):85-91. doi: 10.1016/j.virol.2010.03.038. July 20, 2010. View on PubMed.
  • Authors

    Zhang S, Bovshik EI, Maillard R, Gromowski GD, Volk DE, Schein CH, Huang CY, Gorenstein DG, Lee JC, Barrett AD, and Beasley DW
  • Abstract

    Site-directed mutagenesis of residues in the BC loop (residues 329-333) of the envelope (E) protein domain III in a West Nile virus (WNV) infectious clone and in plasmids encoding recombinant WNV and dengue type 2 virus domain III proteins demonstrated a critical role for residues in this loop in the function and antigenicity of the E protein. This included a strict requirement for the tyrosine at residue 329 of WNV for virus viability and E domain III folding. The absence of an equivalent residue in this region of yellow fever group viruses and most tick-borne flavivirus suggests there is an evolutionary divergence in the molecular mechanisms of domain III folding employed by different flaviviruses.

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