title: DNA recognition properties of the cell-to-cell movement protein (MP) of soybean isolate of Mungbean yellow mosaic India virus (MYMIV-Sb).
abstract: Bipartite geminiviruses possess two movement proteins (NSP and MP), which mediate the intra- and intercellular movement. In order to accomplish the transport process the movement proteins interact with viral nucleic acids in a sequence non-specific manner. To investigate the nucleic acid recognition properties of MP of MYMIV-Sb, the protein was expressed in Escherichia coli as a fusion protein with maltose-binding protein (MBP) and purified in native condition. Gel mobility shift assay was employed for analyzing the DNA recognition properties of purified MBP-MP fusion protein. The analyses demonstrated the sequence non-specific binding of MYMIV-Sb MP to both ds and ssDNA and its high affinity for ssDNA. MP of MYMIV-Sb did not show any specificity towards various forms of plasmid DNA but displayed size selection towards linear dsDNA.
authors.affiliation: Department of Plant Biotechnology, School of Biotechnology, Madurai Kamaraj University, Madurai 625021, India.
authors.forename: Girish K
authors.initials: GK
authors.lastname: Radhakrishnan
authors.forename: Gary A
authors.initials: GA
authors.lastname: Splitter
authors.forename: Ramakrishnan
authors.initials: R
authors.lastname: Usha
mesh_terms: D053839:Begomovirus / Q000502:physiology*; D004277:DNA, Single-Stranded / Q000378:metabolism; D004279:DNA, Viral / Q000378:metabolism*; D024202:Electrophoretic Mobility Shift Assay; D004926:Escherichia coli / Q000235:genetics; D015870:Gene Expression; D053830:Plant Viral Movement Proteins / Q000378:metabolism*; D011485:Protein Binding; D011993:Recombinant Fusion Proteins / Q000096:biosynthesis / Q000235:genetics / Q000302:isolation & purification / Q000378:metabolism; D013025:Glycine max / Q000821:virology*
chemical_list: D004277:DNA, Single-Stranded; D004279:DNA, Viral; D053830:Plant Viral Movement Proteins; D011993:Recombinant Fusion Proteins