title: Crystallization and preliminary X-ray analysis of 1H-3-hydroxy-4-oxoquinaldine 2,4-dioxygenase from Arthrobacter nitroguajacolicus Rü61a: a cofactor-devoid dioxygenase of the alpha/beta-hydrolase-fold superfamily.
abstract: 1H-3-Hydroxy-4-oxoquinaldine 2,4-dioxygenase (HOD) is a cofactor-devoid dioxygenase that is involved in the anthranilate pathway of quinaldine degradation. HOD has been proposed to belong to the alpha/beta-hydrolase-fold superfamily of enzymes. N-terminally His6-tagged HOD has been crystallized by the hanging-drop vapour-diffusion method using sodium/potassium tartrate as a precipitant and CuCl2 as an additive. The structure was solved by the single anomalous dispersion (SAD) technique using data collected to 3.5 A resolution at the Cu absorption peak wavelength. The crystals belong to the primitive tetragonal space group P4(3)2(1)2, with unit-cell parameters a = b = 153.788, c = 120.872 A.
authors.affiliation: Randall Division of Cell and Molecular Biophysics, King's College London, New Hunt's House, Guy's Campus, London SE1 1UL, England. roberto.steiner@kcl.ac.uk
authors.forename: Roberto A
authors.initials: RA
authors.lastname: Steiner
authors.forename: Ursula
authors.initials: U
authors.lastname: Frerichs-Deeken
authors.forename: Susanne
authors.initials: S
authors.lastname: Fetzner
mesh_terms: D001173:Arthrobacter / Q000201:enzymology*; D001483:Base Sequence; D003001:Cloning, Molecular; D003460:Crystallization; D018360:Crystallography, X-Ray; D017931:DNA Primers; D049308:Dioxygenases / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D004591:Electrophoresis, Polyacrylamide Gel; D006867:Hydrolases / Q000737:chemistry / Q000378:metabolism*; D011487:Protein Conformation
chemical_list: D017931:DNA Primers; C101932:1H-3-hydroxy-4-oxoquinaldine 2,4-dioxygenase (decyclizing, CO-forming); D049308:Dioxygenases; D006867:Hydrolases