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The Domain 2 of the HCV NS5A Protein Is Intrinsically Unstructured

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Abstract:

We present here our current understanding of the NS5A-D2 domain of the hepatitis C virus. Whereas this protein domain is globally unstructured as assessed by macroscopic techniques such as size exclusion chromatography, circular dichroism and homonuclear NMR spectroscopy, high resolution triple resonance spectroscopy allows the identification of a small region of residual structure. This region corresponds moreover to the most conserved sequence over the different genotypes of the virus, underscoring its functional importance. We show that it forms an anchoring point for the host cell cyclophilin prolyl cis/trans isomerase, providing a molecular basis for the use of cyclophilin inhibitors in an antiviral strategy.





Keywords: Circular dichroism; Domain 2; Hepatitis C Virus; NMR; NS5A; unstructured

Document Type: Research Article

DOI: https://doi.org/10.2174/092986610791498920

Publication date: 2010-08-01

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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