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Crystallization and diffraction analysis of the SARS (...)

Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Mar ;67(Pt 3):404-8
Crystallization and diffraction analysis of the SARS coronavirus nsp10-nsp16 complex.
Debarnot C, Imbert I, Ferron F, Gluais L, Varlet I, Papageorgiou N, Bouvet M, Lescar J, Decroly E, Canard B.

To date, the SARS coronavirus is the only known highly pathogenic human coronavirus. In 2003, it was responsible for a large outbreak associated with a 10% fatality rate. This positive RNA virus encodes a large replicase polyprotein made up of 16 gene products (nsp1-16), amongst which two methyltransferases, nsp14 and nsp16, are involved in viral mRNA cap formation. The crystal structure of nsp16 is unknown. Nsp16 is an RNA-cap AdoMet-dependent (nucleoside-2’-O-)-methyltransferase that is only active in the presence of nsp10. In this paper, the expression, purification and crystallization of nsp10 in complex with nsp16 are reported. The crystals diffracted to a resolution of 1.9 Å resolution and crystal structure determination is in progress.


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