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A NEW APPROACH TO THE ORIGIN OF LIFE BY STUDYING CHIRAL POLYMERIZATION OF AMINO ACIDS IRRADIATED BY CIRCULARLY POLARIZED LIGHT

Research Project

Project/Area Number 07409005
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 広領域
Research InstitutionKOBE UNIVERSITY

Principal Investigator

AMAKAWA Taisaku  KOBE UNIVERSITY,FACULTY OF HUMAN DEVELOPMENT,PROFESSOR, 発達科学部, 教授 (70031359)

Co-Investigator(Kenkyū-buntansha) EBINA Kuniyoshi  KOBE UNIVERSITY,FACULTY OF HUMAN DEVELOPMENT,ASSOCIATE PROFESSOR, 発達科学部, 助教授 (50151999)
MORII Toshiyuki  KOBE UNIVERSITY,FACULTY OF HUMAN DEVELOPMENT,PROFESSOR, 発達科学部, 教授 (20031370)
TERAKADO Yasutaka  KOBE UNIVERSITY,FACULTY OF HUMAN DEVELOPMENT,ASSOCIATE PROFESSOR, 発達科学部, 助教授 (30127378)
UEJI Shin-chi  KOBE UNIVERSITY,FACULTY OF HUMAN DEVELOPMENT,PROFESSOR, 発達科学部, 教授 (40031364)
NAKAGAWA Kazumichi  KOBE UNIVERSITY,FACULTY OF HUMAN DEVELOPMENT,PROFESSOR, 発達科学部, 教授 (00134403)
Project Period (FY) 1995 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥31,600,000 (Direct Cost: ¥31,600,000)
Fiscal Year 1997: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1996: ¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1995: ¥24,000,000 (Direct Cost: ¥24,000,000)
Keywordsamino acids / chiral polymerization / origin of life / circularly polarized light / synchrotron radiation
Research Abstract

(1) Circularly polarized light has been suggested as a main factor that induces homochiral amino acids. We tried to detect an absolute asymetric decomposition of amino acids by introducing helical undulator radiation.
(2) We succeeded in preparing dried thin films of amino acids (Alanine, Aspartic, acid and Phenylalanine) of which thickness was determined with accuracy.
(3) We obtained absorption spectra and CD spectra of ultra violet radiation light (175-250nm) on the dried films or aqueous amino acids.
(4) We could not, however, detect a significant difference of asymmetrical decomposition between L- and D-type amino acid under clockwise or counterclockwise polarized lights at 205 nm, where CD-absorption difference is the highest.
(5) The similar results as above were obtained for acidic solution of amino acids.
(6) Absolute values of optical absorption coefficient of amino acids were determined.
(7) The results of organic chemistry experiment independently curried out showed that the homochiral oligo peptides (e.g.L-L-L-L) were more stable to hydrolysis at 100゚C than the heterochiral oligo peptide (e.g.L-L-L-D).
(8) These findings described here would give a valuable clue to understand the chirality formation and chemical evolution of life materials.

Report

(4 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • 1995 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] Morii, Toshiyuki: "Δs density in a proton and unpolarized lepton-pdarized proton scatterings." Physics Letters. B375. 343-348 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Mochida, Takeshi: "A trial to detect asymmetric decomposition of circularly polarized undulator radiation." Photon Factory Activity Report 1996. 14. 438 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 中川 和道: "アミノ酸蒸着膜の真空紫外光吸収スペクトルの絶対値測定" 神戸大学機器分析センター報. 第4号(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 中川 和道: "円偏光真空紫外線および非偏光紫外線によるアミノ酸の化学進化に関する研究" 神戸大学発達科学部研究紀要. 第5巻・2号(印刷中). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Toshiyuki Morii: "DELTAs density in a proton and unpolarized lepton-polarized proton scatterings" Phys.Lett.Phys.Lett.B389, (Erratum) (1996). B375. 343-348 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Takeshi Mochida et al.: "A trial to detect asymmetric decomposition of circularly polarized undulator radiation" Photon Factory Activ.Report 1996. #14. 438 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kazumichi Nakagawa et al.: "Absolute values of optical absorption spectra of evaporated thin films of amino acids in vacuum ultraviolet region" Centor Instrm.Anal.Kobe Univ.Reviw. 4 (in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kazumichi Nakagawa et al.: "Study on molecular evolution of amino acids induced by polarized vacuum ultraviolet light and non-polarized ultra violet light" Bull.Fac.Human Develop.5 (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Kazumichi Nakagawa et al.: "Study on molecular evolution of amino acids induced by polarized vacuum ultraviolet light and non-polarized ultra violet light" Bull.Fac.Human Develop.5 (in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Morii,Toshiyuki: "Δs density in a proton and unpolarized lepton-polarized proton scatterings." Physics Letters. B375. 343-348 (1996)

    • Related Report
      1997 Annual Research Report
  • [Publications] Mochida,Takeshi: "A trial to detect asymmetric decomposition of circularly polarized undulator radiation." Photon Factory Activity Report 1996. 14. 438 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 中川 和道: "アミノ酸蒸着膜の真空紫外光吸収スペクトルの絶対値測定" 神戸大学機器分析センター報. 第4号(印刷中). (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] 中川 和道: "円偏光真空紫外線および非偏光紫外線によるアミノ酸の化学進化に関する研究" 神戸大学発達科学部研究紀要. 第5巻・2号(印刷中). (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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