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The foot-and-mouth disease virus capsid precursor, P1–2A, is cleaved by the 3C protease (3Cpro) to VP0, VP3, VP1 and 2A. The P1–2A precursor (wt or mutant) was expressed alone or with 3Cpro and processing of P1–2A was determined. The VP2 K217R and VP3 I2P substitutions (near the VP0/VP3 junction) strongly reduced the processing at this junction by 3Cpro while the substitution VP2 K217E blocked cleavage...
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