Abstract
The vacuolar-type proton pump ATPase (V-ATPase) plays several pivotal roles in the acidification of diverse intracellular compartments and the extracellular environment. The a subunit isoforms a1, a2, and a3, constituting the membrane-embedded section, are expressed in various tissues, and they are involved in the regulation of subcellular localization and activity of the holocomplex. Therefore, the characterization of their properties is indispensable for dissection of the physiological roles of the V-ATPase in highly differentiated cells. In this study, we report the production and characterization of chicken monoclonal antibodies (MAbs) against these mouse a1, a2 and a3 subunit isoforms. These MAbs are shown to be suitable for both immunoblotting and immunofluorescence analysis. The MAbs obtained in this study are useful in understanding the pathological basis of V-ATPase dysfunction.
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