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124 citations found for Ogawa,

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A [gamma]-type cyclodextrin glycosyltransferase that produces [gamma]-cyclodextrin as the main product has been crystallized and analyzed by X-ray diffraction. Phasing was successfully carried out using the molecular-replacement method.

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Acta Cryst. (1984). A40, C329
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The expression, purification and crystallization of the collagen-binding region of the E. rhusiopathiae surface protein RspB is described. The crystals diffracted to 2.2 Å resolution using synchrotron radiation.



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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.

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Acta Cryst. (2008). A64, C424
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Variable-temperature X-ray crystal structure analyses of several N-benzylideneanilines revealed that a conformational change through a pedal motion takes place in the crystals.


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Acta Cryst. (2008). A64, C39
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Variable-temperature X-ray structure analysis of azobenzenes reveals that the torsional vibration of the N-Ph bonds is large enough to give rise to conformational interconversion in crystals.

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Variable-temperature X-ray crystal structure analyses of N-benzylideneanilines revealed that the torsional vibration of the C-Ph and N-Ph bonds causes an apparent shortening of the C=N bond at room temperature.

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The structure of the interstitially ordered lattice formed in zirconium-oxygen alloys has been studied with use of single-crystal data obtained by X-ray and neutron diffraction methods. The structure belongs to space group P312 and the lattice parameters a and c are related to a0 and c0 of the host hexagonal metal lattice by a = [square root]3a0 and c = c0. The ordered arrangement of interstitial oxygen atoms is described as a regular stacking of layers parallel to the (00.1) plane with the sequence (AC)B(AC)B... which is of the same type as that of nitrogen atoms in [epsilon]-Fe2N. The occupancy probability of oxygen atoms is high for interstitial sites of the A and B types while it is low for sites of the C type. The host metal lattice is distorted in such a way that spacings of successive (00.2) planes are not the same and a hexagonal network of atoms in these planes is periodically deformed.

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A new multipurpose X-ray small-angle scattering camera system consisting of a rotating-anode X-ray generator, a double-focusing collimator and a two-dimensional position-sensitive detector has been developed at the High-Intensity X-ray Laboratory of Kyoto University. The overall camera length is 6 m, and the sample-to-detector distance can be varied in 0.5 m increments up to 3 m to cover scattering angles ranging from 0.001 to 0.18 rad. The collimator consists of a pair of crossed-plane total-reflection mirrors of 40 cm in length. The mirrors, which are mechanically bent to form cylindrical surfaces, provide point collimation free of collimation error. General-purpose sample holders equipped with a programmable temperature controller are provided for both transmission and scattering measurements; the temperature is maintained within ± 0.1 K in the range of 223-573 K. A cryostat for measurements down to 20 K, a dynamic sample deformation apparatus, and a temperature-jump equipment are also available. The multi-wire delay-line position-sensitive proportional counter has an active area of 128 × 128 mm with a spatial resolution of 0.5 × 1.0 mm. The data acquisition is controlled by a real-time front-end processor through a CAMAC interface. The data are recorded in a dual-port histogramming memory of 32 bit × 1 Mwords, which enables direct access to the data from the main computer for real-time monitoring and analysis. The performance of the camera is demonstrated with some selected examples: diffraction patterns from carp lateral line nerve myelin and chicken-tendon collagen fibrils, a Guinier plot of the scattering from polystyrene in dilute solution, and time-resolved measurements of polypropylene during the annealing process.

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The structure of the title compound was determined to confirm the position of the keto group in the mol­ecule prepared enantioselectively by a bioconversion from myo-inositol. There are two independent mol­ecules showing similar geometry.

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The absolute configuration was determined for the title compound, which was prepared in a synthetic study on the natural products bryostatins. There are two independent mol­ecules which show similar conformations, except for the orientation of the methoxy groups.

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The absolute configuration was determined for the optically active title compound, which was prepared in a synthetic study on the natural products bryostatins.

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Acta Cryst A. (2013). A69, s304
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A new interference technique to measure the transverse coherence of X-ray free-electron lasers is proposed and applied to the characterization of the coherence properties of ultra-intense focused X-ray pulses from the SPring-8 Ångstrom Compact free-electron LAser (SACLA).

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Acta Cryst. (1984). A40, C324
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