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Raw electrospray mass spectra of deuterium labeled SH3 domains. Labeled from A to E: Itk, Btk, Tec, Txk, Bmx SH3 domains. Each domain was labeled for the time indicated above each spectrum increasing from top to bottom; UND = undeuterated control. All spectra show the +5 charge state, except for Bmx SH3, where the +11 charge state is shown.
