Definitions for Pepsin
ˈpɛp sɪnpepsin

Princeton's WordNetRate this definition:0.0 / 0 votes

1. pepsinnoun

   an enzyme produced in the stomach that splits proteins into peptones

WiktionaryRate this definition:0.0 / 0 votes

1. pepsinnoun

   A digestive enzyme that chemically digests, or breaks down, proteins into shorter chains of amino acids.

WikipediaRate this definition:0.0 / 0 votes

1. Pepsin

   Pepsin is an endopeptidase that breaks down proteins into smaller peptides. It is produced in the chief cells of the stomach lining and 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.It is one of three principal proteases in the human digestive system, the other two being chymotrypsin and trypsin. During the process of digestion, these enzymes, each of which is specialized in severing links between particular types of amino acids, collaborate to break down dietary proteins into their components, i.e., peptides and amino acids, which can be readily absorbed by the small intestine. The cleavage specificity of pepsin is broad, but some amino acids like tyrosine, phenylalanine and tryptophan increase the probability of cleavage.Pepsin's proenzyme, pepsinogen, is released by the chief cells in the stomach wall, and upon mixing with the hydrochloric acid of the gastric juice, pepsinogen activates to become pepsin.

ChatGPTRate this definition:0.0 / 0 votes

1. pepsin

   Pepsin is a digestive enzyme that is released in the stomach, which helps break down proteins into smaller units (amino acids) during the digestion process. It is produced in an inactive form called pepsinogen by the stomach lining cells, and then converted into its active form by stomach acid.

Webster DictionaryRate this definition:5.0 / 1 vote

1. Pepsinnoun

   an unorganized proteolytic ferment or enzyme 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 is the active agent in the gastric juice of all animals

2. Etymology: [Gr. pe`psis a cooking, digesting, digestion, fr. pe`ptein, pe`ssein, to cook, digest: cf. F. pepsine. Cf. Dyspepsia.]

WikidataRate this definition:0.0 / 0 votes

1. Pepsin

   Pepsin is an enzyme whose zymogen 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. It was the first 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, a member of the aspartate protease family. Pepsin is one of three principal protein-degrading, or proteolytic, enzymes in the digestive system, the other two being chymotrypsin and trypsin. The three enzymes were among the first to be isolated in crystalline form. During the process of digestion, these enzymes, each of which is specialized in severing links between particular types of amino acids, collaborate to break down dietary proteins into their components, i.e., peptides and amino acids, which can be readily absorbed by the intestinal lining. Pepsin is most efficient in cleaving peptide bonds between hydrophobic and preferably aromatic amino acids such as phenylalanine, tryptophan, and tyrosine.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Pepsin

   Pepsine, pep′sin, n. one of the essential constituents of the gastric juice: the active agent in fermenting food in the stomach—a hydrolytic ferment.—adj. Pep′tic, relating to or promoting digestion: having a good digestion.—ns. Peptic′ity, eupepsia; Pep′tics, digestion considered as a science: the digestive organs; Pep′togen, a substance producing peptone, any preparation that facilitates digestion.—adjs. Peptogen′ic, Peptog′enous, Pepton′ic.—ns. Pep′tōne, one of a class of albumenoids formed by the action of the chemical ferment pepsin and hydrochloric acid, the latter first converting into a syntonin or acid protein, the former converting this syntonin into peptone—they are soluble in water, are not coagulated by boiling, and pass readily through an animal membrane, being therefore easily absorbed; Peptonisā′tion.—v.t. Pep′tonise, to convert into peptones.—n. Pep′tonoid, a substance like peptone: one of certain food preparations. [Fr.,—Gr. pepsis, digestion—peptein, to digest.]

The Nuttall EncyclopediaRate this definition:0.0 / 0 votes

1. Pepsin

   an essential constituent of the gastric juice extracted from the stomach of the calf, sheep, and pig, and used in medicine to supply any defect of it in the stomach of a patient.

Surnames Frequency by Census RecordsRate this definition:0.0 / 0 votes

1. PEPSIN

   According to the U.S. Census Bureau, Pepsin is ranked #157234 in terms of the most common surnames in America.
   
   The Pepsin surname appeared 103 times in the 2010 census and if you were to sample 100,000 people in the United States, approximately 0 would have the surname Pepsin.
   
   92.2% or 95 total occurrences were White.

Matched Categories

1. • Enzyme

How to pronounce Pepsin?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Pepsin in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Pepsin in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of Pepsin in Pythagorean Numerology is: 7

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Pepsin
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Pepsin
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Pepsin
4. ^ ChatGPT
   https://chat.openai.com
5. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/Pepsin
6. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Pepsin
7. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=Pepsin
8. ^ The Nuttall Encyclopedia
   https://www.gutenberg.org/cache/epub/12342/pg12342-images.html#Pepsin
9. ^ Surnames Frequency by Census Records
   https://www.census.gov/topics/population/genealogy/data/2010_surnames.html