title: Effect of charge derivatization in the determination of phosphorylation sites in peptides by electrospray ionization collision-activated dissociation tandem mass spectrometry
authors.affiliation: Department of Chemistry, Michigan State University East Lansing, Michigan 48864, USA.
authors.initials: N
authors.lastname: Sadagopan
authors.initials: M
authors.lastname: Malone
authors.initials: JT
authors.lastname: Watson