PMID: 11607169Mar 15, 1991Paper

Gene I, a potential cell-to-cell movement locus of cauliflower mosaic virus, encodes an RNA-binding protein

Proceedings of the National Academy of Sciences of the United States of America
V CitovskyP Zambryski

Abstract

Cauliflower mosaic virus (CaMV) is a double-stranded DNA (dsDNA) pararetrovirus capable of cell-to-cell movement presumably through intercellular connections, the plasmodesmata, of the infected plant. This movement is likely mediated by a specific viral protein encoded by the gene I locus. Here we report that the purified gene I protein binds RNA and single-stranded DNA (ssDNA) but not dsDNA regardless of nucleotide sequence specificity. The binding is highly cooperative, and the affinity of the gene I protein for RNA is 10-fold higher than for ssDNA. CaMV replicates by reverse transcription of a 358 RNA that is homologous to the entire genome. We propose that the 35S RNA may be involved in cell-to-cell movement of CaMV as an intermediate that is transported through plasmodesmata as an RNA-gene I protein complex.

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Citations

Jun 1, 1993·Trends in Microbiology·B G McLeanP Zambryski
Nov 1, 2002·Molecular Plant Pathology·Muriel HaasMario Keller
Jul 29, 1998·The Plant Journal : for Cell and Molecular Biology·T KunikY Gafni
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Apr 15, 2005·Molecular Plant-microbe Interactions : MPMI·Jeanmarie Verchot-Lubicz
Jun 1, 1997·Annual Review of Plant Physiology and Plant Molecular Biology·Soumitra GhoshroyVitaly Citovsky
Oct 14, 2000·Annual Review of Cell and Developmental Biology·P Zambryski, K Crawford
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Apr 23, 1999·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·V Citovsky
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Feb 5, 2010·Journal of Virology·Jesús Sánchez-NavarroLivia Stavolone
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