Correct charge state assignment of native electrospray spectra of protein complexes

J Am Soc Mass Spectrom. 2009 Mar;20(3):435-42. doi: 10.1016/j.jasms.2008.10.024. Epub 2008 Nov 17.

Abstract

Correct charge state assignment is crucial to assigning an accurate mass to supramolecular complexes analyzed by electrospray mass spectrometry. Conventional charge state assignment techniques fall short of reliably and unambiguously predicting the correct charge state for many supramolecular complexes. We provide an explanation of the shortcomings of the conventional techniques and have developed a robust charge state assignment method that is applicable to all spectra.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Algorithms
  • Models, Chemical
  • Multiprotein Complexes / chemistry*
  • Proteins / chemistry*
  • Spectrometry, Mass, Electrospray Ionization / methods*

Substances

  • Multiprotein Complexes
  • Proteins