Výsledky vyhledávání - "Takayuki OHNUMA"

Akademický článek

Periplasmic chitooligosaccharide-binding protein requires a three-domain organization for substrate translocation

Autor: Takayuki Ohnuma, Jun Tsujii, Chikara Kataoka, Teruki Yoshimoto, Daijiro Takeshita, Outi Lampela, André H. Juffer, Wipa Suginta, Tamo Fukamizo

Publikováno v: Scientific Reports, Vol 13, Iss 1, Pp 1-18 (2023)

Abstract Periplasmic solute-binding proteins (SBPs) specific for chitooligosaccharides, (GlcNAc)n (n = 2, 3, 4, 5 and 6), are involved in the uptake of chitinous nutrients and the negative control of chitin signal transduction in Vibrios. Most transl

Externí odkaz: https://doaj.org/article/74c569eb94e74f4f9da1131c9b6c9d79

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Akademický článek

Synthesis of Oligoglucosamine Analogues Containing the N,N,N-Trimethyl-D-glucosaminyl Unit by Automated Electrochemical Assembly

Autor: Md Azadur RAHMAN, Shuji TAKAHASHI, Norihiko SASAKI, Toshiyuki ITOH, Takayuki OHNUMA, Toshiki NOKAMI

Publikováno v: Electrochemistry, Vol 91, Iss 11, Pp 112013-112013 (2023)

Oligosaccharides and polysaccharides containing glucosamine are abundant and essential for many living species, including plants, fungi, insects, and other organisms. TMG-chitotriomycin with the N,N,N-Trimethyl-D-glucosaminyl (TMG) unit shows potent

Externí odkaz: https://doaj.org/article/7d48540e7d744723889a7dff610528aa

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Akademický článek

Multi-functionality of a tryptophan residue conserved in substrate-binding groove of GH19 chitinases

Autor: Takuya Nagata, Shoko Shinya, Takayuki Ohnuma, Tamo Fukamizo

Publikováno v: Scientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)

Abstract GH19 and GH22 glycoside hydrolases belonging to the lysozyme superfamily have a related structure/function. A highly conserved tryptophan residue, Trp103, located in the binding groove of a GH19 chitinase from moss Bryum coronatum (BcChi-A)

Externí odkaz: https://doaj.org/article/af857347caee45848bbbbf057bade540

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Akademický článek

Thermodynamic Analysis for Binding of 4-O-β-tri-N-acetylchitotriosyl Moranoline, a Transition State Analogue Inhibitor for Hen Egg White Lysozyme

Autor: Makoto Ogata, Tamo Fukamizo, Takayuki Ohnuma

Publikováno v: Frontiers in Molecular Biosciences, Vol 8 (2021)

4-O-β-tri-N-acetylchitotriosyl moranoline (GN3M) is a transition-state analogue for hen egg white lysozyme (HEWL) and identified as the most potent inhibitor till date. Isothermal titration calorimetry experiments provided the thermodynamic paramete

Externí odkaz: https://doaj.org/article/918a08f092254b778f468a04d1607a2d

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