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Linkage between Isomerization of Phosphoenzyme Intermediate and Calcium Transport in Sarcoplasmic Reticulum Calcium Pump

Linkage between Isomerization of Phosphoenzyme Intermediate and Calcium Transport in Sarcoplasmic Reticulum Calcium Pump
磷酸酶中间体异构化与肌浆网钙泵钙转运的联系
批准号:
20570102
负责人:
DAIHO Takashi
金额:
$3.16万
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:
2008
资助国家:
日本
项目状态:
已结题
起止时间:
2008 至 2010

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中文摘要
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英文摘要
Ca^<2+> is transported by sarcoplasmic reticulm Ca^<2+>-pump through formation and hydrolysis of phosphoenzyme intermediate (EP) phosphorylated with ATP. Ca^<2+> ions bound to EP from cytoplasm are released into lumen in its isomerization (E1P・Ca_2→E2P). I found structural elements essential for the isomerization, and found a new EP intermediate (E2P・Ca_2) between these two EPs. To perform atomic or other structural analysis, I then developed stable analogs for E1P・Ca_2 and E2P・Ca_2. Furthermore, I have elucidated some new roles of the K+ ion bound to EP during Ca^<2+> transport and the mechanism of pump activation by high-concentration of ATP.
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筋小胞体Ca^<2+>-ATPaseのリン酸化中間体転換とCa^<2+>輸送;細胞質領域Actuatorドメインと膜貫通へリックスM1 を結ぶループの役割
肌浆网Ca^2+-ATP酶的磷酸化中间体转化和Ca^2+转运;连接胞质区致动器结构域和跨膜螺旋M1的环的作用;
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者: [大保貴嗣, Stefania Danko, 山崎和生, 鈴木裕]
通讯作者: 鈴木裕
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者: [H., Yamasaki, H., Nakamura, Y., Takano, 山崎和生]
通讯作者: 山崎和生
Roles of Tyr^<122>-hydrophobic Cluster and K^+ Binding in Ca^<2+>-releasing Process of ADP-insensitive Phosphoenzyme of Sarcoplasmic Reticulum Ca^<2+>-ATPase
Tyr^<122>-疏水簇和K^结合在肌浆网ADP不敏感磷酸酶Ca^<2>-释放过程中的作用Ca^<2>-ATP酶
DOI: --
发表时间: 2008
期刊: The Journal of Biological Chemistry 283(43)
影响因子: --
作者: [Kazuo Yamasaki, Guoli Wang, Takashi Daiho, Stefania Danko, and Hiroshi Suzuki]
通讯作者: and Hiroshi Suzuki
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者: [N.Yanagi, M.Niwa, Y.Sakurai, A.Nakajima, K.Kanaori, K.Tajima, 大保貴嗣]
通讯作者: 大保貴嗣
40
    Structure changs in transport sites by phosphoenzyme isomerization of sarcoplasmic reticulum Ca2+ pump
    • 批准号:
      23570130
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $3.49万
    • 财政年份:
      2011
    • 负责人:
      DAIHO Takashi
    • 依托单位:
    Conformatioanl Change in Phosphorylated Intermediate of Sarcoplasmic Reticulum Calcium Pump during Calcium Transport
    • 批准号:
      18570102
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.49万
    • 财政年份:
      2006
    • 负责人:
      DAIHO Takashi
    • 依托单位:
    Transmission of coupling energy from catalytic site to Ca^<2+> transport sites in endoplasmic reticulum calcium pump
    • 批准号:
      16570091
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.43万
    • 财政年份:
      2004
    • 负责人:
      DAIHO Takashi
    • 依托单位:
    Mechanism of Coupling ATP hydrolysis to Ca^<2+> transport in sarcoplasmic reticulum Ca^<2+>-ATPase
    • 批准号:
      14580619
    • 项目类别:
      Grant-in-Aid for Scientific Research (C)
    • 资助金额:
      $2.37万
    • 财政年份:
      2002
    • 负责人:
      DAIHO Takashi
    • 依托单位:
    海外基金