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Abstract Title:

Differential effects on the hepatitis C virus (HCV) internal ribosome entry site by vitamin B12 and the HCV core protein.

Abstract Source:

J Virol. 2004 Nov;78(21):12075-81. PMID: 15479850

Abstract Author(s):

Dongsheng Li, William B Lott, John Martyn, Gholamreza Haqshenas, Eric J Gowans

Abstract:

To investigate the role of the hepatitis C virus internal ribosome entry site (HCV IRES) domain IV in translation initiation and regulation, two chimeric IRES elements were constructed to contain the reciprocal domain IV in the otherwise HCV and classical swine fever virus IRES elements. This permitted an examination of the role of domain IV in the control of HCV translation. A specific inhibitor of the HCV IRES, vitamin B(12), was shown to inhibit translation directed by all IRES elements which contained domain IV from the HCV and the GB virus B IRES elements, whereas the HCV core protein could only suppress translation from the wild-type HCV IRES. Thus, the mechanisms of translation inhibition by vitamin B(12) and the core protein differ, and they target different regions of the IRES.

Study Type : In Vitro Study

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Sayer Ji
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