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Coxsackievirus B3 (CVB3) is a causative agent of viral myocarditis, meningitis, pancreatitis, and encephalitis. Much of what is known about the coxsackievirus intracellular replication cycle is based on the information already known from a well-studied and closely related virus, poliovirus. Like that of poliovirus, the 5′ noncoding region (5′ NCR) of CVB3 genomic RNA contains secondary structures...
Poliovirus, a member of the enterovirus genus in the family Picornaviridae, is the causative agent of poliomyelitis. Translation of the viral genome is mediated through an internal ribosomal entry site (IRES) encoded within the 5′ noncoding region (5′ NCR). IRES elements are highly structured RNA sequences that facilitate the recruitment of ribosomes for translation. Previous studies have shown that...
In this study we exchanged portions of the poliovirus type 1 (PV1) hydrophobic domain within the membrane-associated polypeptide 3AB for the analogous sequences from human rhinovirus 14 (HRV14). The sequence exchanges were based upon a previous report in which the 22 amino acid hydrophobic region was subdivided into two domains, I and II, the latter of which was shown to be required for membrane association...
Sequence and structure comparisons with homologous trypsin-like serine proteases have predicted the S1-specificity pocket in picornavirus 3C proteinases. In this study, we examine the putative roles of such residues in poliovirus 3C substrate recognition. Single amino acid substitutions at 3C residues Thr-142, His-161, Gly-163, Gly-164, and Ala-172 were introduced into near full-length poliovirus...
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