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Three-dimensional strutural study of the sarcoplasmic reticulum clcium ATPase under various physiological conditions.

Research Project

Project/Area Number 04454618
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 生物物性学
Research InstitutionTokyo Institute of Technology

Principal Investigator

TOYOSHIMA Chikashi  Tokyo Institute of Technology, Faculty of Bioscience and Biotechnology, 生命理工学部, 助教授 (70172210)

Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1993: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1992: ¥5,300,000 (Direct Cost: ¥5,300,000)
Keywordssarcoplasmic reticulum / calcium / ATPase / three-dimensional structural / membrance proteins / ion pump / cryo-electron microscopy / カルシウムATPase / 三次元構造 / 構造変化 / 蛋白質結晶 / 画像解析
Research Abstract

The purpose of this research is to reveal the three-dimensional structure of calcium ATPase under various physiological conditions and thereby elucidate the structural aspects of active transport. At the first stage, 3D structure of calcium ATPase without ATP was solved at 14 A resolution by frozen-hydrated electron microscope of the tubular crystals. In our paper published in Nature, we described that the transmembrane structure is unique, consisting of three distinct segments ; it was also possible to correlate the density map to the secondary structure predicted from the amino acid sequence. At the second stage, three-simensional structure of this enzyme was solved with chromium ATP, a non-hydrolysable analog of ATP.Detailed comparison of two structures revealed that groove predicted to be the ATP binding pocket was filled and one of the surrounding domains has moved towards the groove as if putting a lid to the binding pocket. Distinct structural changes were also found with transmembrance segments and luminal domains, demonstrating that the effect of ATP binding is transmitted across the membrane. Furthermore, we have obtained views along the lipid bilayr of 3D microcrystals of this enzyme grown under a high concentrationof calcium. Though the number of images was limited, the resolution was better than 10 A.
On the other hand, a suit of programs has been developed for correcting distortion in helical lattice. It has now become usable and been applied to images of tubular crystals of calcium ATPase. The Fourier tranforms after the sistortion correction appeared much better. Thus, it is very likely that we can resolve individual alpha-helices in this enzyme in a very near future.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] K.Yamane: "Ligand-induced functions of the epidermal growth factor receptor required the positively charged region asymmetrically distributed across plasma membrane." Biochem.Biophys.Res.Commun.184. 1301-1310 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] C.Toyoshima: "Three-dimensional cryo-electron microscopy of the calcium ion pump in the sarcoplamisc reticulum membrane." Nature. 362. 499-501 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] C.Toyoshima: "Contrast transfer for the frozen hydrated specimen.II:Amplitude contrast at very low frequencies." Ultramicroscopy. 48. 165-176 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] A.Sato: "Two-dimensional crystallization of catalase on a monolayer film of poly(l-benzyl-L-histidine)spread at the air/water interface." Biochim.Biophys.Acta. 1162. 54-60 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 豊島 近: "膜蛋白質の電子線三次元構造解析" 蛋白質・核酸・酵素. 38. 1276-1286 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 豊島 近: "「レセプター -基礎と臨床-」 井村裕夫、岡哲雄、芳賀達也、岸本英爾編" 朝倉書店, 944 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Yamane, K., Toyoshima, C., and Nishimura, S.: "Ligandinduced functions of the epidermal growth factor receptor required 19GC01 : Biochem. Biophys. Res. Commun." 184. 1301-1310 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toyoshima, C., Sakabe, H., and Stokes, D.L.: "Three-dimensional sryo-electron microscopy of the calcium ion pump in the sarcoplamisc reticulum membrane." Nature. 362. 499-501 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toyoshima, C., Yonekura, K., and Sakabe, H.: "Contrast transfer for the frozen hydrated specium. II : Amplitude contract at very low frequencies." Ultramicroscopy. 48. 165-176 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Sato, A., Furuno, T., Toyoshima, C., and Sakabe, H.: "Two-dimensional crystallization of catalase on a monolayr film of poly (1-benzyl-L-histidine) spread at the air / water interface." Biochim.1162. 54-60 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toyoshima, C.: "Three-dimensional electron microscopy of membrane proteins (in Japanese)." Proteins Nucelic Acids and Enzymes.38. 1276-1286

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Toyoshima, C.: Asakura-shoten. Three-dimensional structural studies in "Receptor -- basic and clinical aspects" (eds. H.Imura, T.Oka, T.Haga and E.Kishimoto, 944 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] C.Toyoshima: "Three-dimensional cryo-electron microscopy of the calcium ion pump in the sarcoplamisc reticulum membrane." Nature. 362. 469-471 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] C.Toyoshima: "Contrast transfer for the frozen hydrated specimen.II:Amplitude contrast at very low frequencies." Ultramicroscopy. 48. 165-176 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] A.Sato: "Two-dimensional crystallization of catalase on a monolayer film of poly(1-benzyl-L-histidine)spread at the air/water interface." Biochim.Biophys.Acta. 1162. 54-60 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 豊島 近: "膜蛋白質の電子線三次元構造解析" 蛋白質・核酸・酵素. 38. 1276-1286 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Chikashi TOYOSHIMA: "Contrast transfer for the frozen hydrated specimen.II:Amplitude contrast at very low frequencies" Ultramicroscopy. (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Ayano SATO: "Two-dimensional crystallization of catalase on a monolayer film of poly(1-benzyl-L-histidine)spread at the air/water interface;" Biochim.Biophys.Acta. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] Chikashi TOYOSHIMA: "Cryo-electron microscopy of the calcium ion pump in the sarcoplasmic retlculum membrane" Nature,. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 豊島 近: "膜蛋白質の電子線三次元構造解析" 蛋白質・核酸・酵素. (1993)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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