A structural constituent of cytoskeleton. Predicted to be involved in barbed-end actin filament capping; positive regulation of vasoconstriction; and response to xenobiotic stimulus. Located in several cellular components, including brush border; condensed nuclear chromosome; and postsynaptic density. Is expressed in central nervous system; chondrocranium; gut; tail unsegmented mesenchyme; and vertebral axis musculature. Human ortholog(s) of this gene implicated in hereditary spastic paraplegia 50. Orthologous to human ADD3 (adducin 3). [provided by Alliance of Genome Resources, Apr 2022]