SCNM1_acidic is the C-terminal acidic region of eukaryotic sodium channel modifier protein 1. Deletion of this region affects the splicing and normal activity of the sodium channel Nav1.6 from gene Scn8a [1]. SCNM1 sits within the U1C subfamily of RNA binding proteins that is commonly found in RNA-processing proteins, suggesting that SCNM1 is involved in splicing activities. SCNM1 and LUC7L2 associate with the mammalian spliceosomal subunit U1 snRNP [2].

1: SCNM1, a putative RNA splicing factor that modifies disease severity in mice. Buchner DA, Trudeau M, Meisler MH; Science. 2003;301:967-969. PMID:12920299

2: Evidence for a direct role of the disease modifier SCNM1 in splicing. Howell VM, Jones JM, Bergren SK, Li L, Billi AC, Avenarius MR, Meisler MH; Hum Mol Genet. 2007;16:2506-2516. PMID:17656373