Spaar - small regulatory polypeptide of amino acid response

Involved in cellular response to amino acid stimulus; negative regulation of TORC1 signaling; and regulation of skeletal muscle tissue regeneration. Predicted to be located in late endosome membrane. Predicted to be integral component of lysosomal membrane. Predicted to be part of lysosomal proton-transporting V-type ATPase complex. Is expressed in several structures, including central nervous system; dorsal root ganglion; and sensory organ. Orthologous to human SPAAR (small regulatory polypeptide of amino acid response). [provided by Alliance of Genome Resources, Apr 2022]