Enables ATPase inhibitor activity and protein N-terminus binding activity. Involved in associative learning; negative regulation of ATPase activity; and protein stabilization. Acts upstream of or within several processes, including animal organ development; negative regulation of cell size; and nervous system development. Located in cytoplasm. Is active in postsynaptic density. Is expressed in several structures, including central nervous system; genitourinary system; hepatic primordium; liver; and retina. Used to study anterior segment dysgenesis; autism spectrum disorder; autosomal recessive polycystic kidney disease; and tuberous sclerosis. Human ortholog(s) of this gene implicated in intellectual disability; lymphangioleiomyomatosis; tuberous sclerosis; and tuberous sclerosis 1. Orthologous to human TSC1 (TSC complex subunit 1). [provided by Alliance of Genome Resources, Apr 2022]