ID 3.4.21.122 DE transmembrane protease serine 2. AN epitheliasin. CA The enzyme cleaves angiotensin-converting enzyme 2 (EC 3.4.17.23) and CA cleaves influenzea A and B virus and coronavirus spike glycoproteins at CA arginine residues. CC -!- The enzyme, present in mammalia, cleaves and inactivates EC 3.4.17.23 CC at arginine residues in the region R697 to R716, which enhances CC influenza and coronavirus uptake. CC -!- The enzyme also cleaves and activates influenza and coronavirus spike CC glycoproteins and thus facilitates virus-cell membrane fusions. CC -!- The cleavage of SARS-COV2 spike glycoprotein occurs between the S2 CC and S2' site at SKPSKR/SFIEDL, while the cleavage of MERS-COV CC glycoprotein occurs at GSRSAR/SAIEDL. DR O15393, TMPS2_HUMAN; Q9JIQ8, TMPS2_MOUSE; //