%0 Journal Article %J Plos One %D 2013 %T Characterization and Quantification of Intact 26S Proteasome Proteins by Real-Time Measurement of Intrinsic Fluorescence Prior to Top-down Mass Spectrometry %A Russell, J. D. %A Scalf, M. %A Book, A. J. %A Ladror, D. T. %A Vierstra, R. D. %A L. M. Smith %A Coon, J. J. %B Plos One %V 8 %8 Mar %@ 1932-6203 %G eng %2 PMC3594244 %] e58157 %R 10.1371/journal.pone.0058157