This product is an active protein and may elicit a biological response in vivo, handle with caution.
Serine protease/NTPase/helicase NS3
RelevanceThe nonstructural protein NS3 of the hepatitis C virus (HCV) is indispensable for virus replication and a multifunctional enzyme that contains three catalytic activities such as serine protease, helicase, and NTPase. The N-terminal domain of the protein contains protease activity and the C-terminal domain contains nucleotide triphosphatase and RNA helicase activity. It has been shown that NS2/3 cleavage is mediated by NS2-3 protease, whereas NS3 serine protease is responsible for the other four cleavage sites of the nonstructural (NS) region.
Immunoblot analysis on serum samples from 90 patients with chronic hepatitis C virus infection revealed four putative immunogenic regions within the NS3 protein of the virus: E (around amino acids 1250/1251), A (within amino acids 1250-1334), A/B (around amino acids 1323 and 1334), and B/C (around amino acids 1407 and 1412). Among them, region E was most immunodominant, and region A was recognized much less frequently by patients with cirrhosis than by those with chronic hepatitis.
Cellular localizationHost endoplasmic reticulum membrane; Peripheral membrane protein. Note: NS3 is associated to the ER membrane through its binding to NS4A.
References for Active Hepatitis C virus Genotype 1a NS3 protein fragment (ab91471)
has not yet been referenced specifically in any publications.
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