1887

Journal of General Virology

Volume 82, Issue 8

Interaction between molecules of hantavirus nucleocapsid protein Free

Abstract

Intermolecular interactions of Tula hantavirus N (nucleocapsid) protein were detected in the yeast two-hybrid system, prompting further attempts to study this phenomenon. Using chemical cross-linking and immunoblotting it was shown that the N protein from purified virus and from infected cell lysates as well as recombinant protein produced in a baculovirus expression system are capable of forming dimers, trimers and multimers, thus confirming the capacity of the protein molecules to interact with each other. An ELISA format was developed in which molecules of the recombinant N protein were shown to associate non-covalently, via electrostatic interactions. Divalent cations (Ca, Mn, Mg, Ba) enhanced the process 3- to 8-fold suggesting that adequate folding of the N protein is crucial for the association. Based on these data a model for hantavirus nucleocapsid assembly is proposed, in which N molecules first trimerize around the viral RNA molecule, and then the trimers gradually assemble forming longer multimers.

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© Microbiology Society
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2001-08-01
2021-01-17
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Interaction between molecules of hantavirus nucleocapsid protein
J. Gen. Virol. 82, 1845 (2001); https://doi.org/10.1099/0022-1317-82-8-1845
/content/journal/jgv/10.1099/0022-1317-82-8-1845
/content/journal/jgv/10.1099/0022-1317-82-8-1845
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