Cleaves substrates with C-terminal arginine residues. Probably modulates the Wnt signaling pathway, by cleaving some undefined protein. May play a role in cleavage during prohormone processing (By similarity). Inhibited by 2-mercaptomethyl-3-guanidinoethylthiopropanoic acid (MGTA) and guanidinoethylmercaptosuccinic acid (GEMSA). Inhibited by chelating agents such as EDTA and EGTA (By similarity). Abundantly expressed in the placenta, with low to moderate levels in the brain, lung, thymus and kidney. By Alachlor. Belongs to the peptidase M14 family.