Sequence homology predicts that the extracellular domain of the sodium channel β1 subunit forms an immunoglobulin (Ig) fold and functions as a cell adhesion molecule. in developing axons may facilitate recruitment and concentration of sodium channel complexes at nodes of Ranvier. S2 cells induces aggregation which is proposed to occur through homophilic interactions between the… Continue reading Sequence homology predicts that the extracellular domain of the sodium channel