出典:Wiktionary
出典:『Wiktionary』 (2025/11/06 15:45 UTC 版)
From German Pepsin, corresponding to Ancient Greek πέψις (pépsis, “digestion”) + -in.
pepsin (countable and uncountable, plural pepsins)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/20 11:30 UTC 版)
Pepsin is an enzyme whose precursor form (pepsinogen) is released by the chief cells in the stomach and that degrades food proteins into peptides. It was discovered in 1836 by Theodor Schwann who also coined its name from the Greek word pepsis, meaning digestion (peptein: to digest). It was the first animal enzyme to be discovered, and, in 1929, it became one of the first enzymes to be crystallized, by John H. Northrop. Pepsin is a digestive protease.