title: A 2-D liquid-phase chromatography for proteomic analysis in plant tissues.
abstract: Two-dimensional liquid chromatography based on a high-performance chromatofocusing in the first dimension followed by high-resolution reversed-phase chromatography in the second dimension can be used as a complementary approach to protein separation with two-dimensional gel electrophoresis. In this work, Arabidopsis thaliana proteins obtained from different tissue extracts were resolved by using a new automated system, ProteomeLab PF 2D commercialized by Beckman Coulter (Fullerton, CA, USA). In particular, protein patterns obtained after two different extraction procedures (MgSO4 and urea buffer) were compared. Reproducibility of the protein patterns was also confirmed in different injections of the same sample and in the comparative analyses of some proteins by MALDI-TOF/MS. Computer analysis of the chromatograms revealed that with this two-dimensional liquid phase technique, hundreds of "virtual bands" can be identified and compared in crude plant protein lysates.
authors.affiliation: Division of Environmental Biotechnology, Department of Environmental Science, University of Parma, Parco Area delle Scienze, 11/a, 43100 Parma, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Pirondini
authors.forename: Giovanna
authors.initials: G
authors.lastname: Visioli
authors.forename: Aliosha
authors.initials: A
authors.lastname: Malcevschi
authors.forename: Nelson
authors.initials: N
authors.lastname: Marmiroli
mesh_terms: D017360:Arabidopsis / Q000737:chemistry*; D029681:Arabidopsis Proteins / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D040901:Proteomics; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization
chemical_list: D029681:Arabidopsis Proteins