Enables several functions, including ATP binding activity; P-type calcium transporter activity; and calcium-dependent ATPase activity. Involved in calcium ion transmembrane transport; response to peptide hormone; and sarcoplasmic reticulum calcium ion transport. Acts upstream of or within calcium ion transport. Located in sarcoplasmic reticulum. Biomarker of type 2 diabetes mellitus. Human ortholog(s) of this gene implicated in Brody myopathy. Orthologous to human ATP2A1 (ATPase sarcoplasmic/endoplasmic reticulum Ca2+ transporting 1). [provided by Alliance of Genome Resources, Apr 2022]