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Amino acid analysis

A J Smith1

  • 1Beckman Center, Stanford University, California 94305-5425, USA.

Methods in Enzymology
|January 1, 1997
PubMed
Summary
This summary is machine-generated.

Amino acid analysis provides reliable peptide quantification, achieving high accuracy for purified samples. Crude samples may show compromised recovery for some amino acids due to impurities.

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Area of Science:

  • Analytical Chemistry
  • Biochemistry
  • Peptide Synthesis

Background:

  • Amino acid analysis is a cornerstone technique for peptide characterization.
  • Ensuring accuracy in peptide quantification is critical for research and development.

Purpose of the Study:

  • To evaluate the reliability and accuracy of amino acid analysis for synthetic peptides.
  • To identify factors affecting data quality in crude peptide samples.

Main Methods:

  • High-Performance Liquid Chromatography (HPLC) for peptide purification.
  • Amino acid analysis for compositional determination.
  • Mass spectrometry for comprehensive characterization.

Main Results:

  • HPLC-purified peptides yield recovery accuracies better than 5%.

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  • Impurities like scavengers and residual protecting groups can compromise crude sample data.
  • Reasonably accurate quantity estimates are still possible for crude samples, though amino acid recovery may vary.

    • Conclusions:

    • Amino acid analysis is a robust method for synthetic peptide characterization.
    • Combining amino acid analysis with techniques like mass spectrometry and HPLC enhances peptide preparation characterization.
    • Careful sample preparation is essential for optimal amino acid analysis results.