نتایج جستجو برای: catalytic hydrolysis

تعداد نتایج: 114265  

2016
Oliver Daumke Gerrit J. K. Praefcke

Dynamin superfamily proteins are multidomain mechano-chemical GTPases which are implicated in nucleotide-dependent membrane remodeling events. A prominent feature of these proteins is their assembly- stimulated mechanism of GTP hydrolysis. The molecular basis for this reaction has been initially clarified for the dynamin-related guanylate binding protein 1 (GBP1) and involves the transient dime...

Journal: :Biophysical journal 2010
Rieko Shimo-Kon Eiro Muneyuki Hiroshi Sakai Kengo Adachi Masasuke Yoshida Kazuhiko Kinosita

F(1)-ATPase is a rotary molecular motor in which the central gamma subunit rotates inside a cylinder made of alpha(3)beta(3) subunits. To clarify how ATP hydrolysis in three catalytic sites cooperate to drive rotation, we measured the site occupancy, the number of catalytic sites occupied by a nucleotide, while assessing the hydrolysis activity under identical conditions. The results show hithe...

Journal: :Chemical & pharmaceutical bulletin 1999
W H Chen S Hayashi T Tahara Y Nogami T Koga M Yamaguchi K Fujita

Secondary imidazole-appended beta-cyclodextrin 5 with a nondistorted cavity synthesized from a novel intermediate 3-amino-3-deoxy-beta-cyclodextrin exhibits much greater catalytic activity in the ester hydrolysis than its isomer 6 with a distorted cavity, indicating that the catalytic activities of secondary functional cyclodextrins are dependent on cavity structures.

Journal: :Molecules 2017
Jianan Wang Tenghui Bai Yaping Ma Hanjun Ma

For a long time, high-pressure treatment has been used to destroy the compact structures of natural proteins in order to promote subsequent enzymatic hydrolysis. However, there are few reports evaluating the feasibility of directly improving the catalytic capability of proteases by using high-pressure treatments. In this study, the effects of high-pressure treatment on the catalytic capacity an...

Journal: :Chemica : Jurnal Teknik Kimia (e-journal) 2022

Sulfonated activated carbon (SAC) is one of green catalysts that has been successfully synthesized from palm shell waste. The SAC have tested in the hydrolysis cellulose bunch to simple sugar. were prepared waste by converting followed sulfonating step. characterized using XRD, SEM, FTIR and gravimetric methods. show as porous amorphous materials acidic properties, a prerequisite for good catal...

Journal: :Journal of molecular biology 2008
Annette Cronin Shirli Homburg Heike Dürk Ingrid Richter Magdalena Adamska Frederic Frère Michael Arand

We have recently reported that human soluble epoxide hydrolase (sEH) is a bifunctional enzyme with a novel phosphatase enzymatic activity. Based on a structural relationship with other members of the haloacid dehalogenase superfamily, the sEH N-terminal phosphatase domain revealed four conserved sequence motifs, including the proposed catalytic nucleophile D9, and several other residues potenti...

Journal: :The Journal of biological chemistry 1999
J S Kim S S Cha H J Kim T J Kim N C Ha S T Oh H S Cho M J Cho M J Kim H S Lee J W Kim K Y Choi K H Park B H Oh

Amylases catalyze the hydrolysis of starch material and play central roles in carbohydrate metabolism. Compared with many different amylases that are able to hydrolyze only alpha-D-(1,4)-glycosidic bonds, maltogenic amylases exhibit catalytic versatility: hydrolysis of alpha-D-(1,4)- and alpha-D-(1,6)-glycosidic bonds and transglycosylation of oligosaccharides to C3-, C4-, or C6-hydroxyl groups...

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