%0 Journal Article %J Journal of Proteome Research %D 2017 %T Elucidating Escherichia coil Proteoform Families Using Intact-Mass Proteomics and a Global PTM Discovery Database %A Dai, Y. X. %A Shortreed, M. R. %A Scalf, M. %A Frey, B. L. %A Cesnik, A. J. %A Solntsev, S. %A Schaffer, L. V. %A Smith, L. M. %B Journal of Proteome Research %V 16 %P 4156-4165 %8 Nov %@ 1535-3893 %G eng %R 10.1021/acs.jproteome.7b00516