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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #349032

Research Project: Characterization, Management, and Utilization of Soybean Genetic Resources

Location: Soybean/maize Germplasm, Pathology, and Genetics Research

Title: EF-2DE Analysis and Protein Identification

Author
item Wu, Xia - University Of Washington
item Clough, Steven
item Huber, Steven
item Oh, Man-ho - Chungnam National University

Submitted to: Bio-protocol
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 7/1/2013
Publication Date: 10/5/2013
Citation: Wu, X., Clough, S.J., Huber, S.C., Oh, M. 2013. EF-2DE Analysis and Protein Identification. Bio-protocol. 3(19):1-8.

Interpretive Summary: We described the technique isoelectric focusing followed by SDS-PAGE (IEF-2DE), which separates proteins for clearer identification. The technique is particularly useful to distinguish different forms of the same protein, as well as various modifications of a protein. This technique will be useful for molecular biologists.

Technical Abstract: Isoelectric focusing followed by SDS-PAGE (IEF-2DE) separates proteins in a two-dimensional matrix of protein pI (Protein Isoelectric Point) and molecular weight (MW). The technique is particularly useful to distinguish protein isoforms (Radwan et al., 2012) and proteins that contain post-translational modifications such as phosphorylation (Oh et al., 2012) and lysine acetylation (Wu et al., 2011). Proteins that are separated by IEF-2DE can be identified by immunoblot analysis using sequence-specific antibodies or by mass spectrometry.