Evidence for in vitro and in vivo autocatalytic processingof the primary translation product of beet necrotic yellowvein virus RNA 1 by a papain-like proteinase

Evidence for in vitro and in vivo autocatalytic processingof the primary translation product of... Beet necrotic yellow vein virus RNA 1 contains a single long ORF corresponding to the theoretical translation product of 237 kDa which contains the information necessary for replication of the viral genome. This ORF contains a putative papain-like proteinase domain which has been localized, on the basis of sequence alignments, between the helicase and polymerase domains. Here we show that the RNA 1 primary translation product can be cleaved autocatalytically in vitro into two species of 150 kDa and 66 kDa, the latter of which probably contains the entire polymerase domain. A 66 kDa protein was detected immunologically in infected C. quinoa protoplasts using an antiserum specific for the C-terminal region of the RNA 1 primary translation product, confirming that processing also occurs in vivo. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Evidence for in vitro and in vivo autocatalytic processingof the primary translation product of beet necrotic yellowvein virus RNA 1 by a papain-like proteinase

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Publisher
Springer-Verlag
Copyright
Copyright © Wien by 1997 Springer-Verlag/
Subject
Legacy
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s007050050141
Publisher site
See Article on Publisher Site

Abstract

Beet necrotic yellow vein virus RNA 1 contains a single long ORF corresponding to the theoretical translation product of 237 kDa which contains the information necessary for replication of the viral genome. This ORF contains a putative papain-like proteinase domain which has been localized, on the basis of sequence alignments, between the helicase and polymerase domains. Here we show that the RNA 1 primary translation product can be cleaved autocatalytically in vitro into two species of 150 kDa and 66 kDa, the latter of which probably contains the entire polymerase domain. A 66 kDa protein was detected immunologically in infected C. quinoa protoplasts using an antiserum specific for the C-terminal region of the RNA 1 primary translation product, confirming that processing also occurs in vivo.

Journal

Archives of VirologySpringer Journals

Published: May 1, 1997

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