Molecular basis for the binding and selective dephosphorylation of Na+/H+ exchanger 1 by calcineurin

The mechanism by which Ser/Thr protein phosphatases specifically recruit and dephosphorylate their substrates is largely unclear. Hear, the authors elucidate how the Ser/Thr protein phosphatase calcineurin is recruited to its substrate NHE1 and how site-specific dephosphorylation is achieved.