title: Purification, crystallization and preliminary X-ray diffraction analysis of the Whirly domain of StWhy2 in complex with single-stranded DNA.
abstract: StWhy1 and StWhy2 are members of the Whirly family of single-stranded DNA (ssDNA) binding proteins. To understand the mode of binding of the Whirly proteins to single-stranded DNA, crystals of the Whirly domains of both StWhy1 and StWhy2 in complex with single-stranded DNA were obtained by the hanging-drop vapour-diffusion method. The diffraction patterns of the StWhy1-ssDNA complex crystals displayed severe anisotropy and were of low resolution, making them unsuitable for structure determination. In contrast, the crystals of the StWhy2-ssDNA complex diffracted isotropically to 2.20 A resolution. The crystallization and data collection to 2.20 A resolution of StWhy2 in the free form are also reported.
authors.affiliation: Department of Biochemistry, Université de Montréal, PO Box 6128, Station Centre-Ville, Montréal, Québec H3C 3J7, Canada.
authors.forename: Laurent
authors.initials: L
authors.lastname: Cappadocia
authors.forename: Jurgen
authors.initials: J
authors.lastname: Sygusch
authors.forename: Normand
authors.initials: N
authors.lastname: Brisson
mesh_terms: D004277:DNA, Single-Stranded / Q000737:chemistry* / Q000378:metabolism; D004268:DNA-Binding Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D046911:Macromolecular Substances; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000737:chemistry* / Q000235:genetics / Q000378:metabolism; D017434:Protein Structure, Tertiary; D011198:Solanum tuberosum / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D004277:DNA, Single-Stranded; D004268:DNA-Binding Proteins; D046911:Macromolecular Substances; D010940:Plant Proteins