Detected in bronchial epithelial cells. Detected in heart left atrium and left ventricle. Detected in cardiac myocytes (at protein level). Widely expressed with high levels in heart, brain and kidney, and lower levels in colon, ovary, placenta, lung and liver. Highly expressed in cerebellum, and detected at lower levels in amygdala, caudate nucleus, brain cortex, hippocampus, putamen, substantia nigra, thalamus, dorsal root ganglion, spinal cord, pituitary, heart, kidney, lung, placenta, pancreas, stomach, small intestine, uterus and prostate. Detected in right and left heart ventricle and atrium, and in heart Purkinje fibers. Detected in bronchial epithelial cells.