covalent labeling of the alpha-subunit and its tryptic fragments from within the lipid bilayer with [ 125i ] iodonaphthylazide was combined with covalent labeling with 32p from [ gamma-33p ] atp at the cytoplasmic surface and with [ 3h ] n- ( ouabain ) -n'- ( 2-nitro-4-azidophenyl ) ethylenediamine from the extra cellular surface .
C0010834
cytoplasmic
C0007634
cellular