title: Enhanced sequence coverage in tryptic fragment analysis by two-dimensional HPLC/MS using a monolithic silica capillary column.
abstract: The HPLC/MS system, in which a monolithic silica capillary column is directly connected to an electronspray-ionization mass spectrometer, showed superior performance at high mobile phase linear velocity. A two-dimensional (2D) HPLC/MS system was established, using an ion-exchange particle-packed capillary column at the first dimension and a monolithic silica capillary column at the second dimension. In an analysis of tryptic fragments from bovine serum albumin, an 81% sequence coverage, obtained by the 2D-HPLC/MS system, increased by 23% as compared to a 1D-HPLC/MS system. This 2D-HPLC/MS system using a monolithic silica capillary column should be useful for enhancing sequence coverage of tryptic fragments in proteomics.
authors.affiliation: Division of Applied Life Sciences, Graduate School of Agriculture, Kyoto University, Kitasshirakawa, Kyoto, Japan.
authors.forename: Hironobu
authors.initials: H
authors.lastname: Morisaka
authors.forename: Koji
authors.initials: K
authors.lastname: Hata
authors.forename: Joji
authors.initials: J
authors.lastname: Mima
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Tanigawa
authors.forename: Masahiro
authors.initials: M
authors.lastname: Furuno
authors.forename: Norio
authors.initials: N
authors.lastname: Ishizuka
authors.forename: Nobuo
authors.initials: N
authors.lastname: Tanaka
authors.forename: Mitsuyoshi
authors.initials: M
authors.lastname: Ueda
mesh_terms: D000595:Amino Acid Sequence; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D002852:Chromatography, Ion Exchange; D008969:Molecular Sequence Data; D040901:Proteomics / Q000379:methods*; D020539:Sequence Analysis, Protein / Q000379:methods*; D012710:Serum Albumin, Bovine / Q000737:chemistry* / Q000378:metabolism; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*; D014357:Trypsin / Q000378:metabolism*
chemical_list: D012710:Serum Albumin, Bovine; D014357:Trypsin