Acts upstream of or within several processes, including circadian sleep/wake cycle, non-REM sleep; long-term memory; and multicellular organismal iron ion homeostasis. Is expressed in several structures, including early conceptus; genitourinary system; liver; retina nuclear layer; and telencephalon. Used to study restless legs syndrome. Orthologous to human BTBD9 (BTB domain containing 9). [provided by Alliance of Genome Resources, Apr 2022]