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