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Related Experiment Videos

Solid-phase sequencing on the gas-phase sequencer.

V K Sarin, Y Kim, J L Fox

    Analytical Biochemistry
    |May 1, 1986
    PubMed
    Summary
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    This study presents a highly sensitive method for analyzing synthetic peptide sequences using automated Edman degradation and improved HPLC. The technique allows for rapid purity checks during peptide synthesis on solid support.

    Area of Science:

    • Biochemistry
    • Analytical Chemistry
    • Organic Chemistry

    Background:

    • Automated Edman degradation is a standard method for peptide and protein primary structure determination.
    • Solid-phase peptide synthesis (SPPS) is crucial for creating synthetic peptides.
    • Accurate amino acid sequence analysis of peptides synthesized on solid support is essential for quality control.

    Purpose of the Study:

    • To develop a more sensitive method for analyzing synthetic peptide resins.
    • To combine modified gas-phase sequencing with improved High-Performance Liquid Chromatography (HPLC) for peptide analysis.
    • To establish a rapid analytical tool for monitoring peptide purity during solid-phase synthesis.

    Main Methods:

    • Utilized a modified gas-phase sequencer program for automated peptide sequencing.

    Related Experiment Videos

  • Employed an improved reversed-phase HPLC method for analyzing phenylthiohydantoin (PTH)-amino acids.
  • Synthesized peptides on copoly (styrene-1% divinylbenzene) resin beads.
  • Applied the method to analyze synthesized peptide resins.

    • Main Results:

    • Achieved a repetitive yield of 94% using 10-15 resin beads routinely.
    • Demonstrated successful sequencing with as few as 4 resin beads.
    • HPLC analysis of PTH-amino acids achieved subpicomole sensitivity.
    • The combined approach proved more sensitive than conventional solid-phase sequencing using glass beads.

    Conclusions:

    • The developed method offers enhanced sensitivity for peptide sequence analysis on solid support.
    • This technique provides a rapid and sensitive tool for assessing peptide purity during synthesis.
    • The combined gas-phase sequencing and HPLC analysis is effective for synthetic peptide resins.