Elucidation of mobile loop functions in food-related enzymes
阐明食品相关酶的移动环功能
基本信息
- 批准号:21380064
- 负责人:
- 金额:$ 11.15万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 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
The functions of proteins are usually expressed by conformational changes in loop regions. We have investigated the mobile loops in food-related enzymes that are used in food industry. The mobile loops in the active sites of.-amylase and alginate lyase that are important for incorporation of substrate and release of product are analyzed by X-ray crystal analyses of their mutant enzymes. In order to reveal the enzyme mechanism of protein-glutaminase, a mutant of pro protein-glutaminase(A47Q) was prepared. It was found that the mutated Gln47 formed Michaelis complex and S-acyl covalent intermediate with a catalytic cysteine residue.
蛋白质的功能通常由环区域的构象变化表示。我们已经调查了食品行业中使用的食品相关酶的移动循环。通过其突变酶的X射线晶体分析,分析了淀粉酶和藻酸盐裂解酶的活性位点中的移动环。为了揭示蛋白质 - 谷氨酰胺酶的酶机制,制备了蛋白质 - 谷氨酰胺酶(A47Q)的突变体。发现突变的GLN47与催化半胱氨酸残基形成了Michaelis复合物和S-acyl共价中间。
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)
X-ray structures of transferrins and related proteins
- DOI:10.1016/j.bbagen.2011.08.003
- 发表时间:2012-03-01
- 期刊:
- 影响因子:3
- 作者:Mizutani, Kimihiko;Toyoda, Mayuko;Mikami, Bunzo
- 通讯作者:Mikami, Bunzo
Crystal Structures of Protein Glutaminase and Its Pro Forms Converted into Enzyme-Substrate Complex
- DOI:10.1074/jbc.m111.255133
- 发表时间:2011-11-04
- 期刊:
- 影响因子:4.8
- 作者:Hashizume, Ryota;Maki, Yukiko;Mikami, Bunzo
- 通讯作者:Mikami, Bunzo
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MIKAMI Bunzo其他文献
MIKAMI Bunzo的其他文献
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{{ truncateString('MIKAMI Bunzo', 18)}}的其他基金
Elucidation of mobile loop functions in food-related enzymes
阐明食品相关酶的移动环功能
- 批准号:
24380054 - 财政年份:2012
- 资助金额:
$ 11.15万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Loop technology of food related enzymes and food proteins
食品相关酶和食品蛋白的循环技术
- 批准号:
18380067 - 财政年份:2006
- 资助金额:
$ 11.15万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Domain engineering of β-amylase
β-淀粉酶的结构域工程
- 批准号:
12660077 - 财政年份:2000
- 资助金额:
$ 11.15万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Domain engineering of β-amylase
β-淀粉酶的结构域工程
- 批准号:
10660084 - 财政年份:1998
- 资助金额:
$ 11.15万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Protein engineering of beta-amylase
β-淀粉酶的蛋白质工程
- 批准号:
08660109 - 财政年份:1996
- 资助金额:
$ 11.15万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Protein engineering of beta-amylase
β-淀粉酶的蛋白质工程
- 批准号:
06660104 - 财政年份:1994
- 资助金额:
$ 11.15万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Analysis of beta-Amylase Action by X-Ray Crystallography
通过 X 射线晶体学分析 β-淀粉酶的作用
- 批准号:
06044121 - 财政年份:1994
- 资助金额:
$ 11.15万 - 项目类别:
Grant-in-Aid for international Scientific Research
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阐明食品相关酶的移动环功能
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