Journal
ANALYTICAL CHEMISTRY
Volume 73, Issue 8, Pages 1699-1706Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac001276s
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The use of triethylammonium bicarbonate (TEAB) solution in electrospray mass spectrometry proved to be avery efficient way for studying proteins or noncovalent protein complexes under nondenaturing conditions. The low charge states observed in the mass spectra improve the separation of ions arising from macromolecular species of close masses. Moreover, the multiply charged ions generated in a TEAB solution are significantly more stable than those formed under more conventional conditions (for example, with ammonium bicarbonate or acetate solution). re analytical interest of TEAB for the analysis of macromolecular species that can easily dissociate in the gas phase, such as hemoglobin or other macromolecular noncovalent complexes, is demonstrated.
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