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Zinc-dependent metalloprotease, meprin_like subfamily. Meprins are membrane-bound or secreted extracellular proteases, which cleave a variety of targets, including peptides such as parathyroid hormone, gastrin, and cholecystokinin, cytokines such as osteopontin, and proteins such as collagen IV, fibronectin, casein and gelatin. Meprins may also be able to release proteins from the cell surface. Closely related meprin alpha- and beta-subunits form homo- and hetero-oligomers; these complexes are found on epithelial cells of the intestine, for example, and are also expressed in certain cancer cells.