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Kyoto, Japan

Kyoto Institute of Technology in Kyoto, Japan is a Japanese national university established in 1949. The history of the Institute extends back to two schools, Kyoto Craft High School and Kyoto Sericulture Training School , which were forerunners of the Faculty of Engineering and Design and the Faculty of Textile Science, respectively. The former was moved to Sakyo-ku, Matsugasaki in 1930 and changed its name to Kyoto Industrial High School in 1944. The latter developed into Kyoto Sericulture High School, under direct supervision of the Ministry of Education in 1914, and changed its name to Kyoto Sericulture Technical High School in 1931 and further to Kyoto Technical High School of Sericulture in 1944. The two forerunners merged in 1949, due to educational system revisions, to establish the present School of Science and Technology. Together with Shinshu University and Tokyo University of Agriculture and Technology, the Institute is one of Japan's three historical centers of textile research.Kyoto Institute of Technology has a campus at Matsugasaki in Sakyō-ku. Another campus is at Saga in Ukyō-ku. Its Japanese nickname is Kōsen . In English it is known as KIT.Beginning in October 2007, graduate course instruction became available in English through the International Program for Science and Technology for specially selected students from the 50 institutions worldwide with KIT Exchange Agreements. Wikipedia.

Oda K.,Kyoto Institute of Technology
Journal of Biochemistry | Year: 2012

Peptidases or proteinases are now classified into seven families based on the nature of the catalytic residues [MEROPS-the peptidase database (http://merops.sanger.ac.uk/)]. They are aspartic-(first described in 1993), cysteine-(1993), serine-(1993) metallo-(1993), threonine-(1997), glutamic-(2004) and asparagine-peptidase (2010). By using an S-PI (pepstatin Ac) as a probe, a new subfamily of serine peptidase, serine-carboxyl peptidase (sedolisin) was discovered in 2001. In addition, the sixth family of peptidase, glutamic peptidase (eqolisin) was also discovered in 2004. The former peptidase is widely distributed in nature from archea to mammals, including humans. One of these enzymes is related to a human fatal hereditable disease, Batten disease. In contrast, the distribution of the latter peptidases is limited, with most of them found in human or plant pathogenic fungi. One such enzyme was isolated from a fungal infection in an HIV-infected patient. In this review, the background of the findings, and crystal structures, catalytic mechanisms, substrates specificities and distribution of the new peptidase families are described. © 2011 The Authors.

Kawamori A.,Kyoto Institute of Technology
Cell structure and function | Year: 2011

DREF (DNA replication-related element-binding factor) plays important roles in replication and proliferation in vivo by regulating transcription of various genes. However, due to a lack of appropriate cell biological studies in vivo, roles of DREF during a single cell development are poorly understood. To address this question, we focused our attention on macrochaetes bristle development system. Utilizing cell lineage analysis focusing on a single posterior scutellar (PSC) macrochaete sensory organ precursor (SOP) lineages in combination with GAL4/UAS targeted expression system for DREF double strand RNA, we revealed that DREF plays no apparent role in differentiation process during SOP formation. Rather, DREF regulates the timing of asymmetric cell division but perhaps plays no direct role in differentiation during asymmetric cell division. Most importantly, DREF affected replication and growth in shaft cells and/or socket cells. Further analysis revealed that DREF is necessary but not sufficient for nuclear growth and protein synthesis in shaft cells. Finally, it could be demonstrated that DREF plays a critical role in regulating pcna transcription in endocycling shaft cells. All these results provide evidence that DREF plays critical roles, especially in endoreplication process of bristle development, at least in part by regulating the pcna gene expression.

Trifluoromethylated alkynes (CF3 alkynes) are among the most powerful synthetic intermediates for the preparation of fluorine-containing materials. In this account, our recent advances on the synthesis and reactions of trifluoromethylated alkynes are described. 1 Introduction 2 Synthesis of Trifluoromethylated Alkynes 3 Addition Reactions of H-M, C-M and M-M (M = Metal) with Trifluoromethylated Alkynes 3.1 Hydrostannation (H-Sn) 3.2 Hydroboration (H-B) 3.3 Hydrosilylation (H-Si) 3.4 Other Hydrometallations (H-Cu, H-Al) 3.5 Carbostannylation (C-Sn) 3.6 Carbocupration (C-Cu) 3.7 Carbopalladation (C-Pd) 3.8 Bisstannylation (Sn-Sn) 3.9 Silylstannylation (Si-Sn) 4 Cyclization Using Trifluoromethylated Alkynes 4.1 Synthesis of Trifluoromethylated Dihydroisoxazoles 4.2 Synthesis of Trifluoromethylated Indoles 4.3 Synthesis of Trifluoromethylated Benzofurans 4.4 Synthesis of Trifluoromethylated Isoquinolines 4.5 Synthesis of Trifluoromethylated Cyclopentenones 4.6 Synthesis of Trifluoromethylated Benzenes 5 Concluding Remarks.© Georg Thieme Verlag Stuttgart. New York.

Tada H.,Kinki University | Fujishima M.,Kinki University | Kobayashi H.,Kyoto Institute of Technology
Chemical Society Reviews | Year: 2011

Heteronanojunction systems consisting of narrow gap semiconductors represented by metal sulfides and TiO2 are highly expected as visible-light-active photocatalysts and the key materials for various photoelectrochemical devices. The common central issue is increasing efficiency of the light-induced interfacial electron transfer from the metal sulfide quantum dots (QDs) to TiO2. We have newly developed simple and versatile lowerature photodeposition techniques for directly coupling metal sulfide QDs and TiO2 by taking advantage of its photocatalysis and the photoinduced surface superhydrophilicity. This critical review summarizes the recent developments in the photodeposition techniques and their unique characteristics. Subsequently to the Introduction, a theoretical view of the interfacial electron transfer is presented to obtain the guidelines for the design of the heteronanojunction systems. Then, the itemized description is given for the photodepositions of several kinds of metal sulfides on TiO 2 followed by the summary of the features of the photodeposition technique. Finally, the applications of the resulting heteronanojunction systems to the photocatalysts and QD-sensitized solar cells are described, and the excellent performances are discussed by relating with the features of the photodeposition technique (87 references). © 2011 The Royal Society of Chemistry.

Sonoda S.,Kyoto Institute of Technology
Applied Physics Letters | Year: 2012

We investigated the band structure of sputtered Cr-doped GaN (GaCrN) films using optical absorption, photoelectron yield spectroscopy, and charge transport measurements. It was found that an additional energy band is formed in the intrinsic band gap of GaN upon Cr doping, and that charge carriers in the material move in the inserted band. Prototype solar cells showed enhanced short circuit current and open circuit voltage in the n-GaN/GaCrN/p-GaN structure compared to the GaCrN/p-GaN structure, which validates the proposed concept of an intermediate-band solar cell. © 2012 American Institute of Physics.

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