<Tr> <Th> RefSeq </Th> <Td> NM_002770 </Td> </Tr> <Tr> <Th> UniProt </Th> <Td> P07478 </Td> </Tr> <Tr> <Th_colspan="2"> Other data </Th> </Tr> <Tr> <Th> EC number </Th> <Td> 3.4. 21.4 </Td> </Tr>

Where is protease found in the digestive system