Is predicted to encode a protein with the following domains: PDZ superfamily; Ankyrin repeats (3 copies); Ankyrin repeat-containing domain superfamily; PDZ domain 6; PDZ domain; Sterile alpha motif domain; Ankyrin repeat; Domain of unknown function DUF3447; SAM domain (Sterile alpha motif); and Sterile alpha motif/pointed domain superfamily. Is an ortholog of C. elegans shn-1. In C. elegans, shn-1 is involved in defecation and rhythmic behavior.