Abstract
Advances in genomic and proteomic technologies combined with molecular and cell biology have together enabled the identification of numerous genes and their products. Two-dimensional gel electrophoresis (2DE) is especially useful in the study of protein-protein interactions as it permits an improved separation of proteins as well as the detection of specific interacting protein isoform(s) of a protein resulting from post-translational modification. The investigation of interacting proteins using 2DE can be complemented by identification of the proteins by mass spectrometry. Here, I describe how protein complexes, isolated by methods such as immunopre-cipitation, can be analyzed by 2DE using either isoelectric focusing (tube gels or immobilized pH gradient strips) or nonequilibrium pH gradient electrophoresis (NEPHGE) in the first dimension, SDS-PAGE in the second dimension, and gel staining (silver and Coomassie) or Western blotting for the final detection of the interacting proteins.
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© 2004 Humana Press Inc., Totowa, NJ
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Barnouin, K. (2004). Two-Dimensional Gel Electrophoresis for Analysis of Protein Complexes. In: Fu, H. (eds) Protein-Protein Interactions. Methods in Molecular Biology, vol 261. Humana Press. https://doi.org/10.1385/1-59259-762-9:479
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DOI: https://doi.org/10.1385/1-59259-762-9:479
Publisher Name: Humana Press
Print ISBN: 978-1-58829-120-2
Online ISBN: 978-1-59259-762-8
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