Specificity of the polioviral proteinase 3C towards genetically engineered cleavage sites in the viral capsid.

Abstract excerpt

In a study of the cleavage specificity of poliovirus proteinase 3Cpro, two mutant polioviruses were constructed to include putative 3Cpro cleavage sites in the BC loop of VP1. The BC loop of VP1 in the wild-type virus is the neutralization antigenic site IA, consisting of a continuous chain of nine amino acids (ASTTNKDKL). The first mutant, W1-1D-BC1, has four altered amino acids in the BC loop (ASTQGPGKL); the...

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