Genes and protein structure Hydrogen potassium ATPase

structure of hydrogen potassium atpase. α subunit shown in pink; β subunit shown in blue.

the h/k atpase β subunit stabilizes h/k atpase α subunit , required function of enzyme. β subunit prevents pump running in reverse, , appears contain signals direct heterodimer membrane destinations within cell, although of these signals subordinate signals found in h/k atpase α subunit. structure of h/k atpase has been determined humans, dogs, hogs, rats, , rabbits , 98% homologous across species.