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pepsin    
n. 胃液素,酸蛋白酶

胃液素,酸蛋白□

pepsin
n 1: an enzyme produced in the stomach that splits proteins into
peptones

Pepsin \Pep"sin\ (p[e^]p"s[i^]n), n. [Gr. pe`psis a cooking,
digesting, digestion, fr. pe`ptein, pe`ssein, to cook,
digest: cf. F. pepsine. Cf. {Dyspepsia}.] (Physiol. Chem.)
A proteolytic enzyme (MW 34,500) contained in the secretory
glands of the stomach. In the gastric juice it is united with
dilute hydrochloric acid (0.2 per cent, approximately) and
the two together constitute the active portion of the
digestive fluid. It degrades proteins to proteoses and
peptides, and is notable for having a very low pH optimum for
its activity. It is the active agent in the gastric juice of
all animals.
[1913 Webster PJC]

Note: As prepared from the glandular layer of pigs' or
calves' stomachs it constitutes an important article of
pharmacy.
[1913 Webster]


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  • Pepsin - Wikipedia
    Pepsin ˈpɛpsɪn is an endopeptidase that breaks down proteins into smaller peptides and amino acids It is one of the main digestive enzymes in the digestive systems of humans and many other animals, where it helps digest the proteins in food Pepsin is an aspartic protease, using a catalytic aspartate in its active site [2]
  • Pepsin: Signs You Need This Vital Enzyme and How to Get It - Dr. Axe
    Pepsin is a digestive enzyme in the stomach that breaks down proteins into smaller units called polypeptides (or peptides or short) What gland secretes pepsin?
  • Pepsin | Description, Production, Function | Britannica
    Pepsin is a powerful enzyme in gastric juice that digests proteins such as those in meat, seeds, and dairy products It is the mature active form of pepsinogen, which is released into the stomach and mixed with hydrochloric acid to produce pepsin
  • Rethinking Reflux: The Real Culprit Isn’t Acid—It’s Pepsin
    At-A-Glance The digestive enzyme pepsin, not acid, is the primary culprit behind reflux-related damage Unlike acid, pepsin sticks to tissues in the throat and airways, reactivating with acidic foods and causing long-term harm Many people with reflux don’t experience heartburn
  • Pepsin - Structure, Classification, Working, Application and Stability
    Pepsin is an endopeptidase enzyme that degrades proteins into peptides It is formed in the chief cells of the stomach lining and is one of the most important digestive enzymes in humans and many other animals' digestive systems, where it aids in the digestion of proteins
  • Physiology of Pepsin: Unleashing the Power of Protein Digestion
    Pepsin is a critical enzyme involved in the digestion of proteins in the stomach This article explores the physiology of pepsin, including its synthesis, activation, and the role it plays in protein digestion and nutrient absorption
  • Physiology, Pepsin - PubMed
    Gastric juice comprises water, mucus, hydrochloric acid, pepsin, and intrinsic factor Of these five components, pepsin is the principal enzyme involved in protein digestion It breaks down proteins into smaller peptides and amino acids that can be easily absorbed in the small intestine
  • Pepsin | EBSCO Research Starters
    Pepsin is a digestive enzyme located in the gastric juices of the stomach, essential for breaking down proteins into smaller peptides, which can then be absorbed in the intestines
  • Pepsin - Health Encyclopedia
    Pepsin: A key digestive enzyme breaking down proteins in the stomach, vital for nutrient absorption in humans and animals Learn more about its role!





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