Abstract
Mucins are often stained with the basic dye Alcian blue, but mucins with a low acidic glycan content cannot be stained with it. Succinylation-Alcian blue staining is a method that temporarily modifies glycans with succinic acid to visualize mucins with low acidic glycan content. This method can be used to stain mucins on polyvinylidene difluoride (PVDF) membranes separated via supported molecular matrix electrophoresis (SMME) and mucins blotted onto PVDF membranes from gel electrophoreses. The succinyl groups of the modified glycans can be easily and completely removed by releasing O-glycan from the stained mucin bands. Therefore, the glycans can be analyzed using the same methods as those used for mucins with a high acidic glycan content.
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