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Hepatitis C Virus

Hepatitis C virus nonstructural protein may contribute to viral pathogenesis

Published in Health and Medicine Week, June 1st, 2006

According to a study from South Korea, hepatitis C virus (HCV) nonstructural 5B protein regulates tumor necrosis factor alpha signaling through effects on cellular I kappa B kinase.

"HCV NS5B protein is a membrane-associated phosphoprotein that possesses an RNA-dependent RNA polymerase activity. We recently reported that NS5A protein interacts with TRAF2 and modulates tumor necrosis factor alpha (TNF-alpha)-induced NF-kappa B and Jun N-terminal protein kinase (JNK).

"Since NS5A and NS5B are the essential components of the HCV replication complex, we examined whether NS5B could modulate TNF-alpha-induced NF-kappa B and JNK activation," wrote S.H. Choi...

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