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PubMed2004

The crystal structure of the RNA-dependent RNA polymerase from human rhinovirus: a dual function target for common cold antiviral therapy.

Human rhinoviruses (HRV), the predominant members of the Picornaviridae family of positive-strand RNA viruses, are the major causative agents of the common cold. Given the lack of effective treatments for rhinoviral infections, virally encoded proteins have become attractive therapeutic targets. The HRV genome encodes an RNA-dependent RNA polymerase (RdRp) denoted 3Dpol, which is responsible for replicating the viral genome and for synthesizing a protein primer used in the replication. Here the crystal structures for three viral serotypes (1B, 14, and 16) of HRV 3Dpol have been determined. The three structures are very similar to one another, and to the closely related poliovirus (PV) 3Dpol enzyme. Because the reported PV crystal structure shows significant disorder, HRV 3Dpol provides the first complete view of a picornaviral RdRp. The folding topology of HRV 3Dpol also resembles that of RdRps from hepatitis C virus (HCV) and rabbit hemorrhagic disease virus (RHDV) despite very low sequence homology.

Amino Acid Sequence↗
PubMed1984

The complete nucleotide sequence of a common cold virus: human rhinovirus 14.

The complete nucleotide sequence of the single-stranded RNA genome of human rhinovirus 14, one of the causative agents of the common cold, has been determined from cDNA cloned in E. coli. The genome is typical of the picornaviridae family, comprising a 5' non-coding region of 624 nucleotides, a long open reading frame of 6537 nucleotides (90.8% of the genome) and a 3' non-coding region of 47 nucleotides. Comparison of the nucleotide sequence and the predicted amino acid sequence with those of the polioviruses reveals a surprising degree of homology which may allow recognition of regions of antigenic importance and prediction of the virus polyprotein cleavage sites. The results presented here imply a closer genetic relationship between the rhinovirus and enterovirus genera than previously suspected.

Amino Acid Sequence↗