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SCN5A activates PMCA4b. 1 / 1
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"Based on these data, we speculate that the three mutations may disturb the interaction of PMCA4b and SNTA1 in the whole macromolecular complex SCN5A, nNOS, SNTA1, and PMCA4b, thus relieving the negative regulation of PMCA4b on nNOS, and thereby resulting in an increase of local NO concentrations and a biophysical modification of the sodium channel."