<Tr> <Th> ExPASy </Th> <Td> NiceZyme view </Td> </Tr> <Tr> <Th> KEGG </Th> <Td> KEGG entry </Td> </Tr> <Tr> <Th> MetaCyc </Th> <Td> metabolic pathway </Td> </Tr> <Tr> <Th> PRIAM </Th> <Td> profile </Td> </Tr>

Pepsin is inactivated in the duodenum by converting pepsinogen in the presence of an acid