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6 citations found for Ichimura,

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A change in the higher-order structure of the oligomeric protein is directly detectable by a small-angle scattering method. A SAXS study of the denaturation process of the chaperonin protein GroEL showed that the disappearance of the quaternary structure can be monitored by the Kratky plot of the scattered intensities.

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Acta Cryst. (2014). A70, C1004
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6,8,15,17-tetramethyldibenzo-5,9,14,18-tetraazacyclotetradecinatonickel (II) (tmtaa) bears strain within its 14-membered ring and is known to adopt saddle-shaped structure. As a consequence, tmtaa has an asymmetric apical coordination sites at both sides of the saddle. Our previous study revealed that the chlorine substituted complex, [Ni(tmtaa-4Cl)] shown in Figure (X = Cl), exhibited pseudo-polymorphism with dichloromethane and chloroform. This behaviour is due to the good affinity between halogen substituents and halomethane solvent. In this study, we grew single crystals of [Ni(tmtaa-4Br)] using various halomethane solvent as crystallization solvents and elucidated the role of the solvents related to the generation of pseudo-polymorprhism. We have succeeded in obtaining two kinds of single crystals 1 and 2 from the same vial container using bromoform. From X-ray structural analysis, 1 and 2 formed twist dimer as with previous report, and are found to include bromoform in their crystal structure. Note that these complexes adopted more distorted saddle-shaped structure than normal tmtaa complexes. The Ni-N4 planes were not planar. The difference of 1 and 2 was the degree of distortion around Ni-N4 plane, and 1 was more distorted than 2. The space group of these complexes were Aba2 and C2/c respectively. The interactions that led to the difference in packing of dimers were CH...[pi] interaction in 1 and [pi]...[pi] interaction in 2.


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Acta Cryst. (2008). A64, C509
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S. cerevisiae Atg3, an E2-like enzyme that mediates the lipidation of Atg8, was crystallized and diffracted to 2.5 Å resolution.

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The asymmetric unit of the title compound, [Ru(C2H3N)(phen)(terpy)](PF6)2 [phen is 1,10-phenanthroline (C12H8N2) and terpy is 2,2':6',2''-terpyridine (C15H11N3)] contains a monomeric [Ru(CH3CN)(phen)(terpy)]2+ cation and two hexafluoro­phosphate anions. The ligand environment about the Ru atom is distorted octahedral. The Ru-N distances are in the range 1.933 (5)-2.083 (5) Å and the Ru-N(aceto­nitrile) distance is 2.016 (7) Å.

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