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It is also possible that NS5A is a critical component during HCV replication and subcellular localization, which may shed light on the poorly understood HCV life cycle. [ 1 ] [ 4 ] Additionally, NS5A has been shown to modulate the polymerase activity of NS5B , an RNA-dependent RNA polymerase (RdRp) . [ 3 ]
This alternate mechanism relies on the direct binding of the 40S ribosomal subunit by the internal ribosome entry site (IRES) in the 5' UTR of HCV RNA. The HCV IRES adopts a complex structure, and may differ significantly from IRES elements identified in picornaviruses. A small number of eukaryotic mRNAs has been shown to be translated by ...
Chronic hepatitis C is defined as infection with the hepatitis C virus persisting for more than six months based on the presence of its RNA. [18] Chronic infections are typically asymptomatic during the first few decades, [ 18 ] and thus are most commonly discovered following the investigation of elevated liver enzyme levels or during a routine ...
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HCV genome. Nonstructural protein 3 (NS3), also known as p-70, is a viral nonstructural protein that is 70 kDa cleavage product of the hepatitis C virus polyprotein. It acts as a serine protease. [1] [2] C-terminal two-thirds of the protein also acts as helicase and nucleoside triphosphatase. [3]
Detection of viral RNA and DNA genomes can be performed using polymerase chain reaction. This technique makes many copies of the virus genome using virus-specific probes. Variations of PCR such as nested reverse transcriptase PCR and real time PCR can also be used to determine viral loads in patient serum.
HCV genome. Nonstructural protein 5B (NS5B) is a viral protein found in the hepatitis C virus (HCV). [1] It is an RNA-dependent RNA polymerase, having the key function of replicating HCV's viral RNA by using the viral positive RNA strand as a template to catalyze the polymerization of ribonucleoside triphosphates (rNTP) during RNA replication.
Hepacivirus is a genus of positive-strand RNA viruses in the family Flaviviridae. [3] The hepatitis C virus (HCV), in species Hepacivirus C, infects humans and is associated with hepatitis and hepatocellular carcinoma. [3] [4] There are fourteen species in the genus which infect a range of other vertebrate. [3]
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