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BSA-Sugar Neoglycoproteins

Neoglycoproteins can be generally described as proteins that, in their native form, do not contain carbohydrate groups but have been chemically derivatized with sugars.

Nine different neoglycoproteins are available, each with a unique sugar attached to the protein. They are produced by coupling simple sugars to highly purified Bovine Serum Albumin (BSA). These glycoconjugates retain free amino groups, allowing them to be subsequently labeled with fluorochromes, biotin, or other tags.

These neoglycoproteins are useful in several applications:

  • -Test Binding Activity of Lectin-agarose Columns. These neoglycoproteins have been tested for their ability to bind to lectin-agarose beads. They can be used as a quick check to determine whether a lectin-agarose column has retained its ability to bind glycoproteins.
  • - Positive Controls for Blots. Labeled lectins are frequently used to detect, identify, or characterize glycoproteins on a western blot or a dot blot. A sample of a specific neoglycoprotein can be dotted on a corner of the blot just prior to detection and used as a positive control.
  • - Localize Endogenous Sugar-Binding Proteins. Since these neoglycoproteins have free amino groups, they can be easily labeled with fluorochromes, biotin, or other tags. These labeled neoglycoproteins might be used to identify or localize endogenous sugar-binding proteins in biological tissues or cells.

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