title: Crystallization and preliminary X-ray diffraction studies of hyperthermophilic archaeal Rieske-type ferredoxin (ARF) from Sulfolobus solfataricus P1.
abstract: The hyperthermophilic archaeal Rieske-type [2Fe-2S] ferredoxin (ARF) from Sulfolobus solfataricus P1 contains a low-potential Rieske-type [2Fe-2S] cluster that has served as a tractable model for ligand-substitution studies on this protein family. Recombinant ARF harbouring a pET30a vector-derived N-terminal extension region plus a hexahistidine tag has been heterologously overproduced in Escherichia coli, purified and crystallized by the hanging-drop vapour-diffusion method using 0.05 M sodium acetate, 0.05 M HEPES, 2 M ammonium sulfate pH 5.5. The crystals diffracted to 1.85 A resolution and belonged to the tetragonal space group P4(3)2(1)2, with unit-cell parameters a = 60.72, c = 83.31 A. The asymmetric unit contains one protein molecule.
authors.affiliation: Department of Biochemistry and Molecular Biology, Nippon Medical School, Sendagi, Bunkyo-ku, Tokyo 113-8602, Japan.
authors.forename: Asako
authors.initials: A
authors.lastname: Kounosu
authors.forename: Kazuya
authors.initials: K
authors.lastname: Hasegawa
authors.forename: Toshio
authors.initials: T
authors.lastname: Iwasaki
authors.forename: Takashi
authors.initials: T
authors.lastname: Kumasaka
mesh_terms: D019843:Archaeal Proteins / Q000737:chemistry*; D003460:Crystallization; D018360:Crystallography, X-Ray; D014450:Electron Transport Complex III; D005288:Ferredoxins / Q000737:chemistry*; D048229:Sulfolobus solfataricus / Q000737:chemistry*
chemical_list: D019843:Archaeal Proteins; D005288:Ferredoxins; C037989:Rieske iron-sulfur protein; D014450:Electron Transport Complex III