Introducing Wilson disease mutations into the zinc-transporting P-type ATPase of Escherichia coli. The mutation P634L in the 'hinge' motif (GDGXNDXP) perturbs the formation of the E2P state.

Abstract excerpt

ZntA, a bacterial zinc-transporting P-type ATPase, is homologous to two human ATPases mutated in Menkes and Wilson diseases. To explore the roles of the bacterial ATPase residues homologous to those involved in the human diseases, we have introduced several point mutations into ZntA. The mutants P401L, D628A and P634L correspond to the Wilson disease mutations P992L, D1267A and P1273L, respectively. The mutations...

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