title: Structure of the DNA binding wing of the gene-V encoded single- stranded DNA binding protein of the filamentous bacteriophage M13.
abstract: The structure in solution of a beta-loop in mutant Y41H of the single-stranded DNA binding protein encoded by gene-V of the filamentous phage M13 has been elucidated using 2-dimensional 1H-nuclear magnetic resonance techniques. Furthermore, these studies enabled us to demonstrate that an identical structural element is present in wild-type gene-V-protein and that this element intimately is involved in the binding of gene-V-protein to single-stranded DNA. It is shown that the structure of the DNA binding wing deviates from that proposed for the same amino acid sequence on the basis of X-ray diffraction data. The structure is, however, identical to that of the DNA binding wing present in the single-stranded DNA binding protein encoded by the genome of the evolutionary distantly related filamentous phage IKe. The latter observations support our current view that in the binding of these proteins to single-stranded DNA a common structural motif is involved.
authors.affiliation: Laboratory of Biophysical Chemistry, University of Nijmegen, The Netherlands.
authors.forename: J P
authors.initials: JP
authors.lastname: van Duynhoven
authors.forename: P J
authors.initials: PJ
authors.lastname: Folkers
authors.forename: A P
authors.initials: AP
authors.lastname: Stassen
authors.forename: B J
authors.initials: BJ
authors.lastname: Harmsen
authors.forename: R N
authors.initials: RN
authors.lastname: Konings
authors.forename: C W
authors.initials: CW
authors.lastname: Hilbers
mesh_terms: D000595:Amino Acid Sequence; D001435:Bacteriophages / Q000235:genetics; D004277:DNA, Single-Stranded / Q000378:metabolism*; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism; D005814:Genes, Viral; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D015394:Molecular Structure; D009154:Mutation; D011487:Protein Conformation; D014764:Viral Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: D004277:DNA, Single-Stranded; D004268:DNA-Binding Proteins; D014764:Viral Proteins