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; Ankyrin repeat; and Domain of unknown function DUF3447. Is an ortholog of C. elegans shn-1. In C. elegans, shn-1 is involved in defecation and rhythmic behavior.