title: Crystallization and preliminary diffraction studies of NodL, a rhizobial O-acetyl-transferase involved in the host-specific nodulation of legume roots.
abstract: The NodL specified O-acetyltransferase from the microbial symbiont Rhizobium leguminosarum has been over-expressed in Escherichia coli and purified using affinity-elution dye chromatography as the key step. The protein has been crystallized at 20 degrees C in 18% PEG 600, 0.1 M Tris/HCl buffer, pH 8.5, containing 1% dioxane, 0.25% octyl-beta-glucoside, and 5 mM coenzyme A using the hanging drop vapor diffusion method. Ambient temperature X-ray diffraction studies reveal the space group to be hexagonal (P6(3)22) with lattice constants a = b = 77.08 A, c = 160.6 A, and alpha = beta = 90 degrees, gamma = 120 degrees. Crystals that are flash-frozen to 120 K diffract beyond 2.7 A.
authors.affiliation: Department of Biochemistry, University of Leicester, UK.
authors.forename: S M
authors.initials: SM
authors.lastname: Dunn
authors.forename: P C
authors.initials: PC
authors.lastname: Moody
authors.forename: J A
authors.initials: JA
authors.lastname: Downie
authors.forename: W V
authors.initials: WV
authors.lastname: Shaw
mesh_terms: D000123:Acetyltransferases / Q000737:chemistry*; D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000737:chemistry*; D001665:Binding Sites / Q000235:genetics; D002240:Carbohydrate Sequence; D003065:Coenzyme A / Q000378:metabolism; D003460:Crystallization; D018360:Crystallography, X-Ray; D004926:Escherichia coli / Q000235:genetics; D015870:Gene Expression; D008969:Molecular Sequence Data; D011994:Recombinant Proteins / Q000737:chemistry / Q000235:genetics; D016961:Rhizobium leguminosarum / Q000201:enzymology*; D016415:Sequence Alignment
chemical_list: D001426:Bacterial Proteins; D011994:Recombinant Proteins; D000123:Acetyltransferases; D003065:Coenzyme A