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64 citations found for Hara,

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A low-energy positron beam is a unique probe of materials. In high-energy electron and positron storage rings it is possible to generate intense synchrotron radiation with a photon energy of 1-3 MeV by installing a high-field (8-10 T) superconducting wiggler. High-energy photons are converted to low-energy positrons by using a suitable target-moderator system. For an 8 GeV electron storage ring at a beam current of 100 mA, final yields are estimated to be about 108-1010 slow-e+ s-1 or larger depending on the moderation efficiency, with the size of the positron source 101-102 cm2. In the present work a wiggler magnetic system of 10 T is proposed. The main parameters of the superconducting wiggler are presented.

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Pig heart carbonyl reductase has been crystallized in the presence of NADPH. Diffraction data have been collected using synchrotron radiation.

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The crystal structure of monkey dimeric dihydrodiol dehydrogenase complexed with the inhibitor isoascorbic acid has been determined at 2.59 Å resolution.

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Crystals of AKR1B14 were grown from buffered polyethylene glycol solutions and diffracted to 1.86 Å resolution.

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The structure of AKR1C21 holoenzyme was determined at 1.8 Å resolution. A model describing the interaction between AKR1C21 and steroid substrates is proposed that explains the bifunctionality of the enzyme.

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Acta Cryst. (2008). A64, C342
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The structure of the Y224D mutant of mouse 3(17)[alpha]-hydroxysteroid dehydrogenase revealed that the mutation resulted in a change in the conformation of the flexible loop B. This loop is a unique feature of the active-site architecture of the wild type and is formed by the side chains of Tyr224 and Trp227.

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Construction of three RF stations in the storage ring of SPring-8 has been completed. The design concept concentrates on avoiding a coupled-bunch instability which limits the stored current or makes the synchrotron radiation beam unstable. The cavity is bell-shaped to reduce the coupling impedance of the higher-order modes. The cavity dimensions are trimmed systematically to distribute the higher-order mode frequencies. Each cavity has two movable tuners. The temperature of the cavity cooling water is controlled within 0.02 K and the water flow is kept constant. The construction and commissioning of the SPring-8 storage ring RF system is reported.

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Hexagonal crystals of dimeric dihydrodiol dehydrogenase from monkey were grown from buffered ammonium phosphate solutions. This is the first crystallization report of a dimeric dihydrodiol dehydrogenase.

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Orthorhombic crystals of human L-xylulose reductase were grown from buffered polyethylene glycol solutions and diffract to 2.1 Å resolution.

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Orthorhombic crystals of mouse 3(17)[alpha]-hydroxysteroid dehydrogenase were obtained from buffered polyethylene glycol solutions. The crystals diffracted to a resolution of 1.8 Å at the Swiss Light Source beamline X06SA.

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Absolute calibration of a soft X-ray spectrograph has been performed using a white beam of synchrotron radiation. The calibrated spectrograph was a flat-field grazing-incidence spectrograph with an X-ray CCD detector for X-ray laser research. Absolute sensitivity of the spectrograph system can be obtained from transmitted spectra using filters made of several different materials, each providing an absorption-edge wavelength standard. The absolute sensitivity determined in this work shows nearly the same behaviour with wavelength as that in another calibration experiment using a laser-produced plasma as an X-ray source.

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A Suzuki coupling reaction produced the title compound, C44H66N2O2, which consists of a photoisomerizable azobenzene unit coupled to a biphenyl group and a long alkyl chain. The mol­ecule has a trans configuration with respect to the azo (–N=N–) group, and the long alkyl chain adopts a well ordered zigzag arrangement.


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The crystal structure of proliferating cell nuclear antigen (PCNA) bound to a peptide carrying an AlkB homologue 2 PCNA-interacting motif consensus sequence, RFLVK, was determined. The phenylalanine and leucine residues of the peptide, plus a preceding hydrophobic residue, are involved in interactions with PCNA, providing a structural basis for regulation of the PCNA interaction.

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