Elucidation of structure and function relationship in multiple-domain chitinases probed by a combination of X-ray crystallography, solution scattering, and molecular dynamics simulation
结合 X 射线晶体学、溶液散射和分子动力学模拟探讨多域几丁质酶的结构和功能关系
基本信息
- 批准号:21570119
- 负责人:
- 金额:$ 3.08万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2009
- 资助国家:日本
- 起止时间:2009 至 2011
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We suggest a hypothetical binding model of chitin-binding domains of Cht2 and ChiC, members of glycoside hydrolase family 19, against crystallineα-chitin. This model indicates the difference in the binding specificity of two chitinases. In both chitinases, the conformational flexibility of the interdomain linker can be considered to cause the conformational extension and the variability of the domain arrangement. These results tempt us to speculate the following mechanism of chitin degradation. While ChBD binds to chitin chain and acts as an anchor, CatD degrades chitin chains within a defined region of the radius depending on linker length.We determined and refined the crystal structures of the catalytic domain of chitinase D and its inhibitor complex. It is shown that conformational change of a substrate-binding loop is induced by the inhibitor binding.
我们建议对Cht2和Chic的几丁质结合结构域的假设结合模型,糖苷水解酶家族19的成员,与晶体α-二胆素。该模型表示两个几丁质酶的结合特异性差异。在两个几丁质酶中,可以认为域间接头的构象灵活性可导致构象扩展和域排列的可变性。这些结果诱使我们推测以下几丁质降解机理。尽管CHBD与几丁质链结合并充当锚固,但CATD取决于接头长度的半径内定义区域内的几丁质链。我们确定并完善了几丁质酶D及其抑制剂复合物的催化结构域的晶体结构。结果表明,底物结合环的构象变化是由抑制剂结合诱导的。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
イネクラスIキチナーゼ活性ドメインにおけるループ構造の機能解析
水稻I类几丁质酶活性结构域环结构的功能分析
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:Murakawa T;Hayashi H;Taki M;Yamamoto Y;Kawano Y;Tanizawa K;Okajima T.;渡邉剛志
- 通讯作者:渡邉剛志
Structural studies of a bacterial modular chitinase belonging to glycoside hydrolase family 19
属于糖苷水解酶家族 19 的细菌模块化几丁质酶的结构研究
- DOI:
- 发表时间:2009
- 期刊:
- 影响因子:0
- 作者:Yuichiro Kezuka;Yoshikane Itoh;Jun Watanabe;Takeshi Watanabe;and Takamasa Nonaka
- 通讯作者:and Takamasa Nonaka
Structure of full-length class I chitinase from rice revealed by X-ray crystallography and small-angle
X射线晶体学和小角度揭示水稻全长I类几丁质酶的结构
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:Kezuka;Y.;Kojima;M.;Mizuno;R.;Suzuki;K.;Watanabe;T. & Nonaka;T
- 通讯作者:T
蛋白質のX線構造解析と応用
蛋白质X射线结构分析及应用
- DOI:
- 发表时间:2011
- 期刊:
- 影响因子:0
- 作者:津村麻記;Sobhan Ubaidus;佐藤正樹;西山明宏;田崎雅和;澁川義幸;Uehara et al;野中孝昌
- 通讯作者:野中孝昌
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NONAKA Takamasa其他文献
NONAKA Takamasa的其他文献
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{{ truncateString('NONAKA Takamasa', 18)}}的其他基金
Approaches for elucidation of structure-function relationships of modular chitinases using a novel modeling method
使用新颖的建模方法阐明模块化几丁质酶的结构-功能关系的方法
- 批准号:
24510302 - 财政年份:2012
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Development of the Resins having Antibacterial Activity
具有抗菌活性的树脂的研制
- 批准号:
03555196 - 财政年份:1991
- 资助金额:
$ 3.08万 - 项目类别:
Grant-in-Aid for Developmental Scientific Research (B)
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