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Gap junction (GJ) channels provide an important pathway for direct intercellular transmission of signaling molecules. Previously we showed that fixed negative charges in the first extracellular loop domain (E1) strongly influence charge selectivity, conductance, and rectification of channels and hemichannels formed of Cx46. Here, using excised patches(More)
The effects of temperature and solvent substitution with deuterium oxide (D2O) on axoplasmic (ga) and gap junctional (gj) conductances were examined in the earthworm septate median giant axon (MGA). The temperature coefficients (Q10) for ga and gj were 1.4 and 1.5, respectively, between 5 and 15 degrees C. Substitution with D2O rapidly reduced both ga and(More)
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