title: Development of high-throughput liquid chromatography injected ion mobility quadrupole time-of-flight techniques for analysis of complex peptide mixtures.
abstract: The development of a multidimensional approach involving high-performance liquid chromatography (LC), ion mobility spectrometry (IMS) and tandem mass spectrometry is described for the analysis of complex peptide mixtures. In this approach, peptides are separated based on differences in their LC retention times and mobilities (as ions drift through He) prior to being introduced into a quadrupole/octopole/time-of-flight mass spectrometer. The initial LC separation and IMS dispersion of ions is used to label ions for subsequent fragmentation studies that are carried out for mixtures of ions. The approach is demonstrated by examining a mixture of peptides generated from tryptic digestion of 18 commercially available proteins. Current limitations of this initial study and potential advantages of the experimental approach are discussed.
authors.affiliation: Department of Chemistry, Indiana University, Bloomington 47405, USA.
authors.forename: Young Jin
authors.initials: YJ
authors.lastname: Lee
authors.forename: Cherokee S
authors.initials: CS
authors.lastname: Hoaglund-Hyzera
authors.forename: Catherine A
authors.initials: CA
authors.lastname: Srebalus Barnes
authors.forename: Amy E
authors.initials: AE
authors.lastname: Hilderbrand
authors.forename: Stephen J
authors.initials: SJ
authors.lastname: Valentine
authors.forename: David E
authors.initials: DE
authors.lastname: Clemmer
mesh_terms: D000595:Amino Acid Sequence; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D008969:Molecular Sequence Data; D013056:Spectrophotometry, Ultraviolet