Immunoaffinity columns using antibodies as ligands against mammalian membrane proteins could be used for different applications in protein expression control and, if a standard available, for concentration determination. Additionally these columns are ideal for polishing step of Fc fusion proteins of mammalian receptors.
Most importantly such columns could extract a significant amount of a pure membrane mammalian protein suitable for structural analyses, such as mass spec analysis of their glycans. Immunoaffinity chromatographic monoliths against MULT-1 transmembrane and RAE-1 GPI anchored glycoproteins were developed as a part of Glycomet project with the main goal to analyze the antigen glycan parts.
Two different pre-activated support were used: hydrazide (HDZ) and carboxy imidazole (CDI).
