Newsletter

search results

results of search on CRYSTALLOGRAPHY JOURNALS ONLINE

254 citations found for Sasaki,

Search for Sasaki, 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
Acta Cryst. (2011). A67, C529-C530
Download citation


Download citation
Download citation

link to html
We developed two novel methods for growing large, high-quality protein crystals. A two-liquid system enables the convenient extraction of protein crystals without causing mechanical damage due to growth at the interface between two liquids. Since this system does not require limitations on solution volume, it is also suitable for the seed technique, and for growing large crystals. Another new concept is the mild stirring of the solution using the Floating And Stirring Technique (FAST) and the Micro-stirring technique. When compared to conventional techniques, both techniques result in a reduced number of crystals, as well as the growth of large crystals.

Download citation
Download citation


Download citation
Download citation


Download citation
Acta Cryst. (2005). A61, c325-c326
Download citation


Download citation
Download citation

link to html
The crystal structure of an IclR homologue from Microbacterium sp. strain HM58-2 was determined at 2.1 Å resolution. It revealed a unique tetramer conformation, which may represent one of the multiple conformations in transcriptional regulation.

Download citation
Download citation


Download citation
Download citation


Download citation
Download citation

link to html
Full-length human tau-protein kinase I (TPK-I; also known as glycogen synthase kinase-3[beta], GSK-3[beta]) was produced in E. coli and crystallized. The crystals diffract up to 2.3 Å resolution and belong to the orthorhombic space group P2_12_12_1, with unit-cell parameters a = 82.9, b = 86.1, c = 178.1 Å measured at 100 K.

Download citation
Download citation

link to html
The first two crystal structures of binary complexes of full-length glycogen synthase kinase 3[beta] with the ATP analogues hydrolysate ADP and AMPPNP are described. Although several other crystal structures of the enzyme have already been reported, none of them contain ATP analogues. The structures of these binary complexes reveal detailed features of nucleotide recognition by GSK3[beta] and may have useful implications in the design of drug candidates against Alzheimer's disease.

Download citation
Acta Cryst. (2014). A70, C1354
Download citation

link to html
Mn ferrite has a spinel structure to show the ferrimagnetism, where the magnetic moments show a collinear ferrimagnetic ordering between tetrahedral A and octahedral B sites. Since Mn2+ and Fe3+ have the same electronic configuration, it is not easy to determine the cation distribution of Mn ferrite from usual magnetization measurements. Especially in Mn ferrite, both Mn2+ and Fe3+ have a large spin polarization to give strong magnetic moments through the super exchange interaction between the two sites. Replacing Fe3+ by Mn2+ and Mn4+, the ferrimagnetic property weakens through magnetic balance between the sites. Since Mn and Fe ions may have multiple valences in the oxide structure, the scheme of site preference, based on careful study of various valence states, has been investigated for Mn1+xFe2-xO4. Single crystals for Mn1+xFe2-xO4 (x = 0.05, 0.20, 1.36 and 1.50) were synthesized from stoichiometric proportions of Mn3O4 and Fe3O4 in an evacuated silica capsule at 1353 K for 96 h. Each of spherical or parallel-piped crystals, ranging 0.05 to 0.08 mm, was mounted on the glass fiber. Conventional intensity measurements were made using a Rigaku AFC-5S four-circle diffractometer with a graphite (002) monochromator for Mo K[alpha] radiation. Least-squares refinements were made to obtain atomic parameters, converged with R factors ranging 0.023 to 0.029. The site occupancy of Mn and Fe atoms was then determined on the basis of the resonant scattering effect at the Fe K absorption edge ([lambda] = 1.7535 Å), by using a vertical-type four-circle diffractometer at PF-BL-10A. The results show that 89, 82, 100 and 100 percent of Mn atoms occupy the A site for the four samples, respectively. In the third step of analyses, absorption experiments were performed at PF-BL-6C. XANES and XMCD spectra were used at Mn and Fe K edges for determining the valence states of Mn and Mn ions. Finally, the distribution of mixed-valence ions for Mn1.20Fe1.80O4 was determined by the valence-difference contrast method, where the intensity data were collected for a spherical single crystal of 0.08 mm in a diameter at both threshold and pre-edge regions of Mn K edge, by using an AFC-5u four-circle diffractometer installed in PF-BL-6C. The site occupancy with the valence state will be discussed in the presentation, compared with the other type of transition-metal ferrites.


Download citation
Download citation


Download citation
Download citation

link to html
A dimeric analogue of desoxazoline ascidiacycl­amide was synthesized to increase the conformational flexibility of the mol­ecule. The overall structure of this compound, C72H112N16O16S4·3C3H7NO·H2O, was relatively flat and was classified neither as the folded nor squared form, which have been observed in ascidiacycl­amide analogues. Rather, a unique [beta]-sheet was formed in the 48-membered ring with pseudo-twofold symmetry. This was stabilized by hydrogen bonds including C-H...O interactions between thia­zole and carbonyl O atoms. This is the first structure of an ascidiacycl­amide analogue to exhibit a flat conformation composed of a [beta]-sheet.




Download citation
Download citation


Download citation
Download citation

link to html
The program DBWS Tools is an application for DBWS users that compiles input control files for versions 9411 and 9807 and manages program execution using a Windows 95/98/NT interface.


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