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Development of Chiral Edman Degradation Method and Sequential Analysis of D/L-Amino Acid (s) in Peptide

Research Project

Project/Area Number 07672321
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Physical pharmacy
Research InstitutionUniversity of Shizuoka

Principal Investigator

TOYO-OKA Toshimasa  University of Shizuoka, School of Pharmaceutical Sciences, Professor, 薬学部, 教授 (40183496)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1996: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1995: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsChiral derivatization reagent / D / L-Amino Acid / Chiral Edman degradation / Peptide / Diastereomer / Fluorescence analysis / Liquid chromatography / D,L-アミノ酸配列分析
Research Abstract

It was firmly believed that only L-amino acid participates in the functioning of a higher animal. However, a few peptides comprising D-amino acid (s) in the sequence (e.g.dermorphin, deltorphin, achatin I and omega-agatoxin-TK) have been discovered from frog skin, the ganglia of African giant snail and the venom of the funnel web spider. With recent advance of drug formulation technique, many drugs involving bioactive peptides such as insulin and growth hormon have been used for therapy. In some cases, however, wild type peptides can not be apply as the drug due to insufficient stability for drug formulation and undesirable side-effects. To solve these disadvantages, L-amino acid (s) in the sequence are converted to D-enantiomer (s). In these aspect, it is highly desirable to develop a method to discrimate the configulation of each amino acid in peptide sequence. We have developed optically active fluorescent Edman-type reagents, i.e., S(+) and R(-) enantiomers of 4-(3-isothiocyanatopyrrolidin-1-yl)-7-nitro-2,1,3-benzoxadiazole (NBD-PyNCS) and 4-(3-isothiocyanatopyrrolidin-1-yl)-7-(N,N-dimethylaminosulfonyl)-2,1,3-benzoxadiazole (DBD-PyNCS). These reagents have been applied to the resolving of amino acid enantiomers. The reagent also reacted with N-terminal amino functional group in the peptide under mild conditions. The resulting thiocarbamoyl derivative was converted to fluorescent thiohydantin (excitation at around 460 nm and emission at around 550 nm) via thiazolinone in trifluoroacetic acid. The separation of the thiohydantoins by reversed-phase chromatography with acetonitrile/phosphate buffer (pH6.8) as the eluent was good enough for the identification of D/L-amino acid. The applicability of the proposed procedure to sequential analysis of peptide was demonstrated with [D-Ala2]-leucine-enkephalin and deltorphin II.

Report

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

    (21 results)

All Other

All Publications (21 results)

  • [Publications] T.Toyo'oka,Y.-M.Liu: "Development of Optically Active Fluorescent "Edman-type" Reagents." Analyst. 120. 385-390 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Toyo'oka,Y.-M.Liu: "Resolution of Amino Acid Enantiomers by HPLC with Fluorescent Chiral Edman Reagents." Journal of Chromatography A. 689. 23-30 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Toyo'oka,Y.-M.Liu: "Determination of D-and L-Amino Acid Residues in Peptides with Fluorescent Chiral Tagging Reagents by HPLC." Chromatographia. 40. 645-651 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.-M.Liu,et al.: "Enantiomeric Separation of Di-and Tripeptides with Chiral Fluorescence Labelling Reagents by Liquid Chromatgraphy." Analytical Chimica Acta. 314. 169-173 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Toyo'oka,et al.: "Sequential Analysis of D/L-Amino Acid in Peptide with a Novel Chiral Edman Degradation Method." Analytical Sciences. 12. 779-782 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Suzuki,et al.: "Determination of D/L-Amino Acid in Peptide Sequences Based on Fluorescent Chiral Derivatization by Reversed-phase Liquid Chromatography." Analytical Chimica Acta. (in press). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Toyo'oka, Y.-M.Liu: "Development of Optically Active Fluorescent "Edman-type" Reagents." Analyst. 120. 385-390 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Toyo'oka, Y.-M.Liu: "Resolution of Amino Acid Enantiomers by HPLC with Fluorescent Chiral Edman Reagents." Journal of Chromatography A. 689. 23-30 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Toyo'oka, Y.-M.Liu: "Determination of D- and L-Amino Acid Residues in Peptides with Fluorescent Chiral Tagging Reagents by HPLC." Chromatographia. 40. 645-651 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.-M.Liu, J.-R.Miao, T.Toyo'oka: "Enantiomeric Separation of Di- and Tripeptides with Chiral Fluorescence Labelling Reagents by Liquid Chromatography." Analytical Chimica Acta. 314. 169-173 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Toyo'oka, T.Suzuki, T.Watanabe, Y.-M.Liu: "Sequential Analysis of D/L-Amino Acid in Peptide with a Novel Chiral Edman Degradation Method." Analytical Sciences. 12. 779-782 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Suzuki, T.Watanabe, T.Toyo'oka: "Determination of D/L-Amino Acid in Peptide Sequences Based on Fluorescent Chiral Derivatization by Reversed-phase Liquid Chromatography." Analytical Chimica Acta. (in Press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T. Toyooka, Y. -M. Liu: "Development of Optically Active Fluorescent ″Edman-type″ Reagents." Analyst. 120. 385-390 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Toyooka, Y. -M. Liu: "Resolution of Amino Acid Enantiomers by HPLC with Fluorescent Chiral Edman Reagents." Journal of Chromatography A. 689. 23-30 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Toyooka, Y. -M. Liu: "Determination of D- and L- Amino Acid Residues in Peptides with Fluorescent Chiral Tagging Reagents by HPLC." Chromatographia. 40. 645-651 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y. -M. Liu, et al.: "Enantiomeric Separation of Di- and Tripeptides with Chiral Fluorescence Labelling Reagents by Liquid Chromatography." Analytical Chimica Acta. 314. 169-173 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Toyooka, et al.: "Sequential Analysis of D/L-Amino Acid in Peptide with a Novel Chiral Edman Degradation Method." Analytical Sciences. 12. 779-782 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T. Suzuki, et al.: "Determination of D/L-Amino Acid in Peptide Sequences Based on Fluorescent Chiral Derivatization by Reversed-phase Liquid Chromatography." Analytical Chimica Acta. (in press). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Toyo'oka,Y.-M.Liu: "Development of Optically Active Fluorescent"Edman-type"Reagents." Analyst. 120. 385-390 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Toyo'oka,Y.-M.Liu: "Resolution of Amino Acid Enantiomers by HPLC with Fluorescent Chiral Edman Reagents." Journal of Chromatography A. 689. 23-30 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Toyo'oka,Y.-M.Liu: "Determination of D-and L-Amino Acid Residues in Peptides with Fluorescent Chiral Tagging" Chromatographia. 40. 645-651 (1995)

    • Related Report
      1995 Annual Research Report

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

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