Structure
Volume 12, Issue 7, July 2004, Pages 1157-1163
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Article
West Nile Virus Core Protein: Tetramer Structure and Ribbon Formation

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Abstract

We have determined the crystal structure of the core (C) protein from the Kunjin subtype of West Nile virus (WNV), closely related to the NY99 strain of WNV, currently a major health threat in the U.S. WNV is a member of the Flaviviridae family of enveloped RNA viruses that contains many important human pathogens. The C protein is associated with the RNA genome and forms the internal core which is surrounded by the envelope in the virion. The C protein structure contains four α helices and forms dimers that are organized into tetramers. The tetramers form extended filamentous ribbons resembling the stacked α helices seen in HEAT protein structures.

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