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Mass Spectrometric Analysis of Mucin Core Proteins

 Last Update: 2020-11-24
 Source: Internet
 Author: User

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protein purification protocol

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Mucins are difficult to handle for their identification and characterization via proteomic applications due to their heavily glycosylated nature (up to 90%), high molecular weight (200 kDa–200 MDa), and size (Rg 10–300 nm). Their core proteins are extremely large and highly substituted with oligosaccharides, which only allow access to a highly restricted portion of their protein. For this reason, conventional 1D or 2D polyacrylamide gel-based proteomic approaches are not effective for identification and characterization of mucin molecules. In this chapter, we present our current protocol employing a modified shotgun proteomic approach to identify these complex glycoproteins.

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