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The Electrophoretic Movement of Proteins from Various
The Electrophoretic Movement of Proteins from Various

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BIOC455Advert - life.illinois.edu
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... Expertly curated section (UniProtKB/Swiss-Prot) and computerannotated section (UniProtKB/TrEMBL); minimum level of redundancy; high level of integration with other databases; stable identifiers; diversity of sources including large scale genomics, small scale cloning and sequencing, protein sequenci ...
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Protein purification



Protein purification is a series of processes intended to isolate one or a few proteins from a complex mixture, usually cells, tissues or whole organisms. Protein purification is vital for the characterization of the function, structure and interactions of the protein of interest. The purification process may separate the protein and non-protein parts of the mixture, and finally separate the desired protein from all other proteins. Separation of one protein from all others is typically the most laborious aspect of protein purification. Separation steps usually exploit differences in protein size, physico-chemical properties, binding affinity and biological activity. The pure result may be termed protein isolate.The methods used in protein purification can roughly be divided into analytical and preparative methods. The distinction is not exact, but the deciding factor is the amount of protein that can practically be purified with that method. Analytical methods aim to detect and identify a protein in a mixture, whereas preparative methods aim to produce large quantities of the protein for other purposes, such as structural biology or industrial use. In general, the preparative methods can be used in analytical applications, but not the other way around.
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