A new functional analysis of intracellular ion-transporting proteins
细胞内离子转运蛋白的新功能分析
基本信息
- 批准号:24659114
- 负责人:
- 金额:$ 2.5万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Challenging Exploratory Research
- 财政年份:2012
- 资助国家:日本
- 起止时间:2012-04-01 至 2014-03-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
A novel electrophysiological assay technique based on solid supported membranes (SSM) has been shown to be useful for analysis of channels and transporters. We tried to apply this technique to synaptic vesicles (SVs) and lysosomal membranes (LMs), purified from rat brains and mouse livers, respectively. Application of ATP to the sensors with SVs triggered current responses dependent on Mg2+ and sensitive to bafilomycin A1 (Baf), which are thought to be V-ATPase specific currents. On the other hand, though LMs are also embedded with V-ATPases, the sensors evoked current responses with different characteristics. They were independent of Mg2+, only partially sensitive to Baf and even triggered by application of ADP. These features suggest that the currents are not attributed to V-ATPases but any other lysosomal protein. The present study shows the utility and potential of SSM-based electrophysiology especially for analyzing native organellar membrane proteins.
基于固体支撑膜(SSM)的一种新的电生理检测技术已被证明可用于通道和转运体的分析。我们试图将这项技术应用于分别从大鼠脑和小鼠肝脏纯化的突触小泡(SVS)和溶酶体膜(LMS)。将三磷酸腺苷应用于SVS传感器,可触发依赖于镁离子且对巴菲罗星A1(Baf)敏感的电流反应,这被认为是V-ATPase特异性电流。另一方面,虽然LMS也嵌入了V-ATPase,但传感器产生的电流响应具有不同的特征。它们不依赖于镁离子,对BaF仅部分敏感,甚至可被ADP触发。这些特征表明,电流不是归因于V-ATPase,而是任何其他溶酶体蛋白。本研究显示了基于SSM的电生理学的实用性和潜力,特别是在分析天然细胞器膜蛋白方面。
项目成果
期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Application of a novel electrophysiological assay technique to native lysosomal membranes
新型电生理测定技术在天然溶酶体膜中的应用
- DOI:
- 发表时间:2013
- 期刊:
- 影响因子:0
- 作者:横山詩子;石渡遼;大島登志男;南沢享;石川義弘;Bai Y;Ichikawa Y;Yokota T;横山 詩子;横山詩子;横山詩子;Yokoyama U;Yokoyama U;Yu Sakamoto
- 通讯作者:Yu Sakamoto
トランスポータ活性を電気的に測定する自動化システム
用于电子测量转运体活动的自动化系统
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:Ishiwata R;Yokoyama U;Arakawa N;Nomura A;Oshima T;Minamisawa S;Ishikawa Y;金子周司
- 通讯作者:金子周司
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KANEKO Shuji其他文献
KANEKO Shuji的其他文献
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{{ truncateString('KANEKO Shuji', 18)}}的其他基金
Pathophysiological roles of TRP family members in a variety of neurological disorders
TRP 家族成员在多种神经系统疾病中的病理生理学作用
- 批准号:
24390016 - 财政年份:2012
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Research on the pathophysiological roles of TRP channels on the neuron-glia interactions in central nervous system disorder
TRP通道在中枢神经系统疾病中神经元-胶质细胞相互作用中的病理生理作用研究
- 批准号:
21390022 - 财政年份:2009
- 资助金额:
$ 2.5万 - 项目类别:
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Research on the function of cation channel that could affect the process of neurodegenerative disease
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18390166 - 财政年份:2006
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
STUDY OF THE PHENOTYPES AND FUNCTIONS OF TRP FAMILY MEMBERS EXPRESSED IN NEURONS
TRP家族成员神经元表达的表型和功能研究
- 批准号:
15590059 - 财政年份:2003
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Functional analysis of neuronal Ca^<2+> channel domains as targets of therapeutics
作为治疗靶标的神经元 Ca^2 通道域的功能分析
- 批准号:
13672278 - 财政年份:2001
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A study on the role of two different Ca^<2+> channel families in neurons
两种不同Ca^2通道家族在神经元中作用的研究
- 批准号:
11672168 - 财政年份:1999
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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09672222 - 财政年份:1997
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$ 2.5万 - 项目类别:
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Development of electric dictionary system in the Internet
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07558009 - 财政年份:1995
- 资助金额:
$ 2.5万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
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