but there is increasing evidence
These proteases perform the posttranslational proteolytic processing of the viral polyprotein ,
The molecular mechanisms by which enteroviruses cause disease are poorly understood , but there is increasing evidence that the two enteroviral proteases , 2A pro and 3C pro , are important mediators of pathology .
These proteases perform the posttranslational proteolytic processing of the viral polyprotein , but they also cleave several host - cell proteins in order to promote the production of new virus particles , as well as to evade the cellular antiviral immune responses .