Highlights on the capacities of "Gel-based" proteomics.

Highlights on the capacities of "Gel-based" proteomics.
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DOI:
10.1186/1477-5956-8-23
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发表时间:
2010-04-28
期刊:
影响因子:
2
通讯作者:
Chevalier F
Chevalier F
中科院分区:
生物学4区
文献类型:
--
作者:
Chevalier F

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Gel-based proteomic is the most popular and versatile method of global protein separation and quantification. This is a mature approach to screen the protein expression at the large scale, and a cheaper approach as compared with gel-free proteomics. Based on two independent biochemical characteristics of proteins, two-dimensional electrophoresis combines isoelectric focusing, which separates proteins according to their isoelectric point, and SDS-PAGE, which separates them further according to their molecular mass. The next typical steps of the flow of gel-based proteomics are spots visualization and evaluation, expression analysis and finally protein identification by mass spectrometry. For the study of differentially expressed proteins, two-dimensional electrophoresis allows simultaneously to detect, quantify and compare up to thousand protein spots isoforms, including post-translational modifications, in the same gel and in a wide range of biological systems. In this review article, the limits, benefits, and perspectives of gel-based proteomic approaches are discussed using concrete examples.
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