2005
DOI: 10.1002/cbic.200400451
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Transient Structural Ordering of the RNA‐Binding Domain of Carnation Mottle Virus p7 Movement Protein Modulates Nucleic Acid Binding

Abstract: Plant viral movement proteins bind to RNA and participate in the intra- and intercellular movement of the RNAs from plant viruses. However, the role and magnitude of the conformational changes associated with the formation of RNA-protein complexes are not yet defined. Here we describe studies on the relevance of a preexisting nascent alpha-helix at the C terminus of the RNA-binding domain of p7, a movement protein from carnation mottle virus, to RNA binding. Synthetic peptide analogues and single amino acid mu… Show more

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Cited by 21 publications
(41 citation statements)
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“…Computer analyses suggest that PFBV p7 structure fits well with the general scheme proposed for carmoviral DGBp1 that distinguishes three different structural domains: an unordered N-terminus, an α-helical central region and a C-terminus with potential β-sheet folding [Akgoz et al, 2001;Marcos et al, 1999;Navarro et al, 2006;Vilar et al, 2001Vilar et al, , 2005. The central region is rich in positively charged amino acids and is expected to endow the protein with RNA binding properties as it has been demonstrated for CarMV and MNSV DGBp1 Navarro et al, 2006] as well as the corresponding product of Turnip crinkle virus [Wobbe et al, 1998].…”
Section: Discussionmentioning
confidence: 77%
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“…Computer analyses suggest that PFBV p7 structure fits well with the general scheme proposed for carmoviral DGBp1 that distinguishes three different structural domains: an unordered N-terminus, an α-helical central region and a C-terminus with potential β-sheet folding [Akgoz et al, 2001;Marcos et al, 1999;Navarro et al, 2006;Vilar et al, 2001Vilar et al, , 2005. The central region is rich in positively charged amino acids and is expected to endow the protein with RNA binding properties as it has been demonstrated for CarMV and MNSV DGBp1 Navarro et al, 2006] as well as the corresponding product of Turnip crinkle virus [Wobbe et al, 1998].…”
Section: Discussionmentioning
confidence: 77%
“…En el caso de las DGBp1, análisis comparativos de secuencia han definido la existencia de tres dominios estructurales: (1) uno N-t apenas estructurado, que se encuentra muy poco conservado entre proteínas homólogas, (2) otro C-t, plegado a modo de lámina-β y altamente conservado en proteínas equivalentes y (3) una región central α-helicoidal Akgoz et al, 2001;Vilar et al, 2001Vilar et al, , 2005Navarro et al, 2006]. En lo que respecta a las DGBp2, uno de los aspectos más destacables de su estructura es la presencia de una o dos regiones con un alto porcentaje de aminoácidos hidrofóbicos que pueden comportarse como dominios TM; además, en todos los casos se predicen plegamientos en forma de lámina-β en el extremo C-t [Vilar et al, 2001;Navarro et al, 2006].…”
Section: Proteínas Implicadas En El Movimiento En La Familia Tombusviunclassified
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