... University, Ithaca,NY 14 853, USAFax: +607 255 413 7E-mail: fwm5@cornell.edu(Received 30 May 2007, revised 12 October2007, accepted 17 October 2007)doi :10 .11 11/ j .17 42-4658.2007.0 614 7.xFor the characterization ... spectra of 1 : 1, 2 : 1 and 3 : 1 mixtures of 14 4 and 11 6 kDa proteinsshowed the corresponding molecular ions and, foreach, 11 17 different mass values of 1 10 kDa thatrepresented their b or y fragment ... highcapabilities of proteolysis proteomicsFred W. McLafferty 1 , Kathrin Breuker2, Mi Jin 1 , Xuemei Han 1 , Giuseppe Infusini 1 , Honghai Jiang 1 ,Xianglei Kong 1 and Tadhg P. Begley 1 1 Department of...