Predicted to enable GTP binding activity. Acts upstream of or within response to muscle activity involved in regulation of muscle adaptation and store-operated calcium entry. Predicted to be located in membrane and sarcoplasmic reticulum. Predicted to be active in cytoplasm; intracellular membrane-bounded organelle; and plasma membrane. Is expressed in brain ventricular layer; diaphragm; limb; skeletal musculature; and tail mesenchyme. Orthologous to human SRL (sarcalumenin). [provided by Alliance of Genome Resources, Apr 2022]