Journal of Virology, April 2000, p. 2967-2972, Vol. 74, No. 7
Institut des Sciences Végétales,
CNRS, 91198 Gif sur Yvette, France,1 and
Biologische Bundesanstalt für Land und
Forstwirtschaft, Institut für Pflanzenvirologie, Mikrobiologie
und Biologische Sicherheit, D-38104 Braunschweig,
Germany2
Received 5 August 1999/Accepted 22 December 1999
Clink, a 20-kDa protein of faba bean necrotic yellows virus, a
single-stranded DNA plant virus, interacts with pRB family members and
a SKP1 homologue from Medicago sativa. An LxCxE motif and
an F-box of Clink mediate the interactions with the respective proteins. The capacity of Clink to bind pRB correlates with its ability
to stimulate viral replication. Interaction of a single protein with
the cell cycle regulator pRB and SKP1, a constituent of the
ubiquitin-protein turnover pathway, appears to be a novel feature.
Hence, Clink may represent a new class of viral cell cycle modulators.
0022-538X/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Clink, a Nanovirus-Encoded Protein, Binds both pRB
and SKP1


*
Corresponding author. Mailing address: Institut des
Sciences Végétales, CNRS, 91198 Gif sur Yvette, France.
Phone: 33 1 69 82 38 33. Fax: 33 1 69 82 36 95. E-mail:
gronenborn{at}isv.cnrs-gif.fr.
Present address: Abteilung für Pflanzenphysiologie,
Botanisches Institut der Universität Basel, CH-4056 Basel, Switzerland.
Present address: Institute of Plant Biology, BRC, H-6701 Szeged, Hungary.
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