Figure 5. Junctional current (I_j) data from paired oocytes. The left column shows examples of current traces recorded from homotypic pairs (Cx43/Cx43 and Cx46/Cx46), a heterotypic pair (Cx43/Cx46), and a heteromeric pair (Cx43•46/Cx43•46). The right column plots normalized steady-state junctional conductances (filled circles) measured at the end of 10-s-long voltage steps, and fit to the Boltzmann equation (curved lines).