Newsletter

search results

results of search on CRYSTALLOGRAPHY JOURNALS ONLINE

93 citations found for Nagata,

Search for Nagata, in the World Directory of Crystallographers

Select bibliographic records for downloading using the checkboxes or select all button

Results 1 to 20, sorted by name:


Download citation
Download citation

link to html
Two halide-binding sites were identified in the crystal structure of the newly isolated haloalkane dehalogenase DbeA from Bradyrhizobium elkanii USDA94. Elimination of the second halide-binding site significantly modified the enzyme substrate specificity, catalytic activity and stability in the presence of chloride salts. A shift in the substrate-specificity class after mutagenesis was demonstrated for the first time for haloalkane dehalogenases.

Download citation
Download citation

link to html
A novel type of phosphoserine phosphatase from H. thermophilus TK-6 was heterologously expressed in E. coli, purified and crystallized by the sitting-drop vapour-diffusion method. The crystals obtained belonged to space group P212121 and diffracted X-rays to 1.5 Å resolution.

Download citation
Download citation


Download citation
Download citation

link to html
A monomeric mutant of Azami-Green from G. fascicularis was expressed, purified and crystallized using the sitting-drop vapour-diffusion method. The crystal belonged to space group P1 and diffracted X-rays to 2.20 Å resolution.

Download citation
Download citation


Download citation
Download citation

link to html
A fucose-specific lectin from A. aurantia was crystallized. 2.2 Å resolution data sets were collected and phased by the MAD method using an Hg derivative.


Download citation
Download citation

link to html
The title compound, [Co(NCS)2(C4H12N2)2]NCS, (I), has an octahedral coordination geometry, in which one of the seven-membered chelate rings adopts the chair form and the other the twist-boat form.

Download citation
Download citation

link to html
The title compound, [CoCl2(C4H12N2)2]Cl·H2O, (I), has an octahedral coordination geometry. The conformations of the seven-membered chelate rings are disordered between the twist-chair and twist-boat forms. The space group of (I) is Cc, although the structure has a pseudo-center of symmetry.

Download citation
Download citation

link to html
asHPAL, a member of the HpaI/HpcH subfamily of class II aldolases, was expressed, purified and crystallized in the absence and presence of 2-ketobutyrate as one of its substrates using the sitting-drop vapour-diffusion method. asHPAL crystals grown without and with 2-ketobutyrate diffracted to 1.60 and 1.55 Å resolution, respectively.

Download citation
Download citation

link to html
In the crystal structure of the title complex, [Ni(C6H7NO)3](PF6)(C2F3O2), the NiII ion is in a slightly distorted octa­hedral NiO3N3 coordination geometry with each of the three N and three O atoms in a meridional coordination. In the crystal, the complex mol­ecules and the trifluoro­acetate anions are connected via O-H...O hydrogen bonding into layers parallel to the ab plane.

Download citation
Download citation

link to html
The putative sensor histidine kinase domain of the cytoplasmic protein HksP4 from the hyperthermophilic bacterium A. aeolicus VF5 was expressed, purified and crystallized by the sitting-drop vapour-diffusion method. Crystals were obtained in the presence of ATP and AMPPNP; they were found to belong to the same space group P212121 and diffracted X-rays to 3.1 and 2.9 Å resolution, respectively.


Download citation
Download citation

link to html
Under irradiation by an intense electron beam a V6O13 crystal reacts with the carbon deposited on the surface during microscopic observation. The structural changes during the reaction were directly observed by means of lattice images, in which the array of VO6 octahedra was resolved. At the initial stage cavities smaller than 20 Å in diameter appear preferentially in the thin part of the crystal and some crystallographic shear planes are formed in their wall. The cavities with the heavily distorted surroundings are seen as white regions. Kinks in lattice fringes, indicating the occurrence of stacking faults, are simultaneously found in the matrix. At the advanced stage the VO2 phase and its twin component are produced. The mechanism of the transition of V6O13 to VO2 can be interpreted in terms of the cooperative movement of octahedra.

Download citation
Download citation

link to html
The contrast of electron microscope lattice images of a vanadium monosulphide with superstructures was dynamically calculated on the basis of the multislice method. Interactions of 80 waves were analysed. It was shown that the vacancy-rich vanadium sites were imaged as white spots not only at the very thin part but also at the thicker part inside the first equal-thickness contour, which appeared at the thickness of 60 Å. A non-stoichiometric vanadium monosulphide, VS1.155, quenched imperfectly from the preparation temperature at 1217 °C, was examined on the basis of the lattice image observation by a 100 kV high-resolution electron microscope. Orderings in the inter- as well as intralayers could be recognized directly from the arrangement of the white spots. Interpretable lattice images appeared exclusively inside the first equal-thickness contour. A mixture of some different types of images was observed in a crystal fragment; in some band-like regions the 4C-type superstructure was found with almost the same structure as Fe7S8. Each band extended parallel to the (001) plane with thickness of at most 50 Å and the orientation was in a twin relation to that of the adjoining one. The other regions showed less well-defined lattice images, although they gave the broad diffraction peaks ranging from the 4C- to 3C-type reflexions. In order to determine the phase relations at high temperatures the specimen was heated by focusing an electron beam on the portion slightly apart from the area under examination. The technique enabled us to observe only the heating effect. Upon heating, the 4C type first increased in volume, seen by the thickening of some bands. On further heating the 3C type increased in intensity on the diffraction pattern. The structure of the 3C type was estimated to be almost the same as Fe7Se8 except that the vacancy concentration fuctuated among the partially occupied vanadium layers.

Download citation
Download citation

link to html
The purification and crystallization of 3-quinuclidinone reductase from A. tumefaciens allowed the collection of a diffraction data set to 1.72 Å resolution.

Download citation
Acta Cryst. (2008). A64, C235-C236
Download citation


Download citation
Download citation

link to html
Human S100A13 protein was cloned, expressed, purified and crystallized by the hanging-drop vapour-diffusion method. The crystals obtained belonged to space group P212121 and diffracted to a resolution of 1.8 Å.

Download citation
Download citation


Download citation
Download citation

link to html
In the crystal structure of 4-(carboxymethyl)imidazol-3-ium picrate, C5H7N2O2+.C6H2N3O7-, the imidazole N3 atom is protonated and contacts the deprotonated phenol and nitro O atoms of picric acid through a bifurcated hydrogen bond. The carboxyl group of the imidazole-4-acetic acid is in a neutral state and participates in the dimer formation between centrosymmetrically related molecules through O...H-O hydrogen bonds. No significant stacking interaction is observed between the aromatic rings of both molecules, indicating the superiority of the hydrogen-bonding ability of imidazole-4-acetic acid over the [pi]-donating ability of picric acid.

Follow IUCr Journals
Sign up for e-alerts
Follow IUCr on Twitter
Follow us on facebook
Sign up for RSS feeds