Electron capture dissociation mass spectrometry in characterization of peptides and proteins

Biotechnol Lett. 2006 Jul;28(14):1047-59. doi: 10.1007/s10529-006-9065-z. Epub 2006 Jun 23.


Electron capture dissociation (ECD) represents one of the most recent and significant advancements in tandem mass spectrometry (MS/MS) for the identification and characterization of polypeptides. In comparison with the conventional fragmentation techniques, such as collisionally activated dissociation (CAD), ECD provides more extensive sequence fragments, while allowing the labile modifications to remain intact during backbone fragmentation--an important attribute for characterizing post-translational modifications. Herein, we present a brief overview of the ECD technique as well as selected applications in characterization of peptides and proteins. Case studies including characterization and localization of amino acid glycosylation, methionine oxidation, acylation, and "top-down" protein mass spectrometry using ECD will be presented. A recent technique, coined as electron transfer dissociation (ETD), will be also discussed briefly.

Publication types

  • Review

MeSH terms

  • Amino Acid Sequence
  • Molecular Sequence Data
  • Peptide Mapping / instrumentation*
  • Peptide Mapping / methods*
  • Peptide Mapping / trends
  • Peptides / chemistry*
  • Proteins / chemistry*
  • Sequence Analysis, Protein / methods*
  • Tandem Mass Spectrometry / instrumentation*
  • Tandem Mass Spectrometry / methods*
  • Tandem Mass Spectrometry / trends


  • Peptides
  • Proteins