Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Shun-ichi Kawahara"'
Autor:
Shun-ichi Kawahara, Ryuichiro Suzuki, Satoshi Kaneko, Shigeyasu Ito, Zui Fujimoto, Atsushi Kuno, Kazunari Taira, Tsunemi Hasegawa
Publikováno v:
The Journal of Biochemistry. 146:61-70
Retaining glycosyl hydrolases, which catalyse both glycosylation and deglycosylation in a concerted manner, are the most abundant hydrolases. To date, their visualization has tended to be focused on glycosylation because glycosylation reactions can b
Publikováno v:
Chemistry - A European Journal. 11:4458-4464
Molecular interactions between pi systems having different pi-electron character (benzene, hexafluorobenzene, and borazine), and a Lewis acid/base (borane and ammonia) were theoretically studied. An attractive interaction between benzene, the electro
Publikováno v:
ChemBioChem. 6:297-303
We report a straightforward method for the site-specific modification of long double-stranded DNA by using a maleimide adduct of deoxycytidine. This novel nucleoside analogue was efficiently incorporated at the 3'-termini of DNA by terminal deoxynucl
Publikováno v:
The Journal of Physical Chemistry A. 108:6744-6749
A molecular interaction between a methane/fluoromethane molecule and a benzene/hexafluorobenzene molecule was theoretically studied. Attractive interaction between the fluorine atom of the fluoromethane and the π-system of the hexafluorobenzene was
Autor:
Shun-ichi Kawahara, Tadafumi Uchimaru
Publikováno v:
Journal of Computer Chemistry, Japan. 3:41-48
The secondary interaction contribution in complexation via multiple hydrogen bonds was estimated using model complexes. Based on the results of hydrogen fluoride complexes, proton donor (D) - proton acceptor (A) type secondary interaction was attract
Publikováno v:
The Journal of Chemical Physics. 119:10081-10087
The π/π interaction (stacking) and N(B)–H/π interaction of the borazine (B3N3H6) dimer were theoretically studied. In contrast to the benzene dimer, the gauche parallel-stacked dimer of borazine was energetically minimum, and total interaction e
Publikováno v:
Helvetica Chimica Acta. 86:3265-3273
trans-Hydrogen-bond hyperfine splitting via magnetic interaction, which is observed as J-coupling in NMR experiments, was theoretically studied. trans-Hydrogen-bond hyperfine splitting should be closely related to the orbital interaction between the
Autor:
Atsushi Kuno, Masumi Taki, Tsunemi Hasegawa, Yutaka Ikeda, Kazunari Taira, Shun-ichi Kawahara
Publikováno v:
Protein Engineering Design and Selection. 16:699-706
Proteins containing unnatural amino acids have immense potential in biotechnology and medicine. We prepared several histidine analogues including a novel histidine analogue, beta-(1,2,3-triazol-4-yl)-DL-alanine. These histidine analogues were assayed
Autor:
Tadafumi Uchimaru, Shun-ichi Kawahara
Publikováno v:
European Journal of Organic Chemistry. 2003:2577-2584
Substituent effects on the hydrogen bond energies of Watson−Crick-type base pairs, formed between a chemically modified nucleic acid base derivative and an unmodified one, were evaluated by ab initio molecular orbital theory. Different trends were
Publikováno v:
Chemical Physics. 290:79-83
Hydrogen bond cooperativity in heterocyclic hydrogen bond complexes was studied. The arrangement of the hydrogen bond donor (D)–acceptor (A) orientation has an important role in the cooperativity. When a hydrogen bond has been formed at the neighbo