The topology of the C-terminal sections of the NCX1 Na (+) /Ca ( 2+) exchanger and the NCKX2 Na (+) /Ca ( 2+) -K (+) exchanger.

The topology of the C-terminal sections of the NCX1 Na (+) /Ca ( 2+) exchanger and the NCKX2 Na (+) /Ca ( 2+) -K (+) exchanger.