branchial plasma membranes from the freshwater cichlid teleostoreochromis mossambicus ( tilapia ) contain two na ( + ) -dependent atpases : na ( + ) /k ( + ) atpase , and an amiloride-sensitive atpase which is postulated to operate as a na ( + ) /h ( + ) ( -nh4 ( + ) ) atpase .
C0001479
na
C0001473
atpase