Membrane; Multi-pass membrane protein. Late endosome membrane. Lysosome membrane. Observed in a punctate intracellular pattern showing partial colocalization with late endosomes/lysosomes. Not detected at the cell surface.
Widely expressed in both adult and fetal tissues. Highest levels in placenta, uterus, ovary, spleen, lymph node and bone marrow. Lowest levels in brain and heart.