Sample preparation by in-gel digestion for mass spectrometry-based proteomics.
The proteomic characterization of proteins and protein complexes from cells and cell organelles is the next challenge for investigation of the cell. After isolation of the cell compartment, three steps have to be performed in the laboratory to yield information about the proteins present. The protein mixtures must be separated into single species, broken down into peptides, and, finally, identified by mass spectrometry. Most scientists engaged in proteomics separate proteins by electrophoresis. For characterization and identification of proteomes, mass spectrometry of peptides is the method of choice. To combine electrophoresis and mass spectrometry, sample preparation by "in-gel digestion" has been developed. Many procedures are available for in-gel digestion, which inspired us to review in-gel digestion approaches.
Granvogl
Bernhard
B
Department für Biologie I, Ludwig-Maximilians-Universität, Menzinger Strasse 67, 80638, München, Germany.
Plöscher
Matthias
M
Eichacker
Lutz Andreas
LA
D000478:Alkylation; D004591:Electrophoresis, Polyacrylamide Gel / Q000379:methods*; D013058:Mass Spectrometry / Q000379:methods*; D010084:Oxidation-Reduction; D010446:Peptide Fragments / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D010447:Peptide Hydrolases / Q000737:chemistry; D011506:Proteins / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D020543:Proteome / Q000032:analysis* / Q000737:chemistry; D040901:Proteomics / Q000379:methods*; D013194:Staining and Labeling / Q000379:methods
D010446:Peptide Fragments; D011506:Proteins; D020543:Proteome; D010447:Peptide Hydrolases