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Development of ecological bioprocesses for the production of heat shock proteins using aqueous two-phase systems

Research Project

Project/Area Number 06555237
Research Category

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

Allocation TypeSingle-year Grants
Research Field 反応・分離工学
Research InstitutionOsaka University

Principal Investigator

KOMASAWA Isao  Osaka University, Dept.of Chemical Engineering, Professor, 基礎工学部, 教授 (40029476)

Co-Investigator(Kenkyū-buntansha) SHIOMORI Koichiro  Miyazaki University Dept.of Material Engineering, Research Fellow, 工学部, 助手 (80235506)
TSUCHIDO Tetsuaki  kansai University, Dept.of Bioengineering, Associate Professor, 工学部, 助教授 (50029295)
KUBOI Ryoichi  Osaka University, Dept.of Chemical Engineering, Associate Professor, 基礎工学部, 助教授 (40029567)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1995: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1994: ¥4,500,000 (Direct Cost: ¥4,500,000)
KeywordsAqueous two-phase / Heat shock protein / Bioprocess / E.coli / GroEL / GroES / CAB / Structure formation
Research Abstract

The effective refolding process was designed and proposed as the extractive refolding process using aqueous two-phase systems (ATPS) mediated with heat shock proteins (HSP) at higher temperature.
In this integrated extractive refolding process which combined and exploited both functions of heat shock proteins and ATPS,the refolding rate can be accelerated suggesting the advantage of refolding at high temperature. Furthermore the activity obtained from more hydrophilic phase can be improved due to prevention of aggregation and to protection from heat inactivation of GroEL and refolded protein can be concentrated into the hydrophilic phase separating from the denatured protein.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] Ryoichi Kuboi: "Puritication Process for Heat Shock Proteins Using Agueous Two-Phase system and PEG Fractional Precipitation" J.Chem.Eng.Japan. 28. 797-802 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koji Yano: "Partitioning Behabiors of Stressed Proteins in Aqueous Two-Phuose systems" Bioseparation with Aqueous Two-Phase systems. (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Koji Yano: "Studies on Retalding with Host Shock Proteins Basecl on Their Partitioning Behabior in Aqueous Two-Phase systems" Proc.I.S.E.C.'96. (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] R.Kuboi, T.Hasegawa, K.Yano and I.Komasawa: "Purification Process for Heat Shock Proteins Using Aqueous Two-Phase System and PEG Fractional Precipitation" J.Chem.Eng.Japan. 28. 797-802 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Yano, K.Minagawa, R.Kuboi and I.Komasawa: "Partitioning Behaviors of Stressed Proteins in Aqueous Two-Phase Systems" Biosep.ATPS. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] K.Yano, T.Hasegawa, R.Kuboi, I.Komasawa: "Studies on Refolding with Heat Shock Proteins Based on Their Partitioning Behavior in Aqueous Two-Phase systems" Proc.ISEC'96. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Ryoichi Kuboi: "Purification Process for Heat Shock Proteins Using Aqueous Two-Phase System and PEG Fractional Precipitation" J.Chem.Eng.Japan. 28. 797-802 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Koji Yano: "Partitioning Behaviors of Stressed Proteins in Aqueous Two-Phase Systems" Bioseparation with Aqueous Two-Phase Systems. (in press). (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] Koji Yano: "Studies on Refolding with Heat Shock Proteins Based on Their Partitioning Behavior in Aqueous Two-Phase Systems" Proc.ISEC'96. (in press). (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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