Enables several functions, including ATP binding activity; P-type calcium transporter activity involved in regulation of cardiac muscle cell membrane potential; and lutropin-choriogonadotropic hormone receptor binding activity. Involved in several processes, including calcium ion transport; regulation of cardiac muscle cell membrane potential; and regulation of cardiac muscle contraction. Located in several cellular components, including apical ectoplasmic specialization; perinuclear region of cytoplasm; and sarcoplasmic reticulum. Is extrinsic component of cytoplasmic side of plasma membrane. Part of protein-containing complex. Used to study abdominal obesity-metabolic syndrome 1; congestive heart failure; and type 2 diabetes mellitus. Biomarker of euthyroid sick syndrome; heart disease; hypothyroidism; pulmonary hypertension; and type 2 diabetes mellitus. Human ortholog(s) of this gene implicated in acrokeratosis verruciformis; essential hypertension; keratosis follicularis; and pulmonary hypertension. Orthologous to human ATP2A2 (ATPase sarcoplasmic/endoplasmic reticulum Ca2+ transporting 2). [provided by Alliance of Genome Resources, Apr 2022]