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EntityQ25902· pop 31· linked from 88 articles

Also known as Cym, embryonic pepsinogen

Chymosin or rennin is a protease found in rennet. It is an aspartic endopeptidase belonging to MEROPS A1 family. It is produced by newborn ruminant animals in the lining of the abomasum to curdle the milk they ingest, allowing a longer residence in the bowels and better absorption. It is widely used in the production of cheese.

Key facts

Enzyme.Name
Chymosin
Enzyme.EC_number
3.4.23.4
Enzyme.CAS_number
9001-98-3
Enzyme.GO_code
0030602
Enzyme.image
CHYMOSIN COMPLEX WITH THE INHIBITOR CP-113972.jpg
Enzyme.caption
Crystal structure of bovine chymosin complex with the inhibitor CP-113972.
Nonhuman protein.Name
Chymosin [Precursor]
Nonhuman protein.caption
X-ray analysis of calf chymosin
Nonhuman protein.image
X-RAY ANALYSES OF ASPARTIC PROTEINASES IV. STRUCTURE AND REFINEMENT AT 2.2 ANGSTROMS RESOLUTION OF BOVINE CHYMOSIN.jpg
Nonhuman protein.Organism
Bos taurus
Nonhuman protein.Symbol
Cym
Nonhuman protein.AltSymbols
CPC
Nonhuman protein.EntrezGene
529879
Nonhuman protein.UniProt
P00794
Nonhuman protein.PDB
4CMS
Protein.Name
chymosin pseudogene (human)
Protein.HGNCid
2588
Protein.Symbol
CYMP

via Wikipedia infobox

Protein · UniProt

Pepsin A

Gene
Cym
Organism
Mus musculus (Mouse)
Length
379 aa
Molecular mass
42,511 Da
Evidence
2: Evidence at transcript level
Aspartyl proteaseDisulfide bondHydrolaseProteaseSignalZymogen
View on UniProt →

Swiss-Prot (reviewed) · via UniProt

Wikidata facts

Instance of
protein
Subclass of
peptidase
Image
X-RAY ANALYSES OF ASPARTIC PROTEINASES IV. STRUCTURE AND REFINEMENT AT 2.2 ANGSTROMS RESOLUTION OF BOVINE CHYMOSIN.jpg
Show 4 more facts
EC enzyme number
3.4.23.4
found in taxon
house mouse
biological process
protein catabolic process
Commons category
Chymosin (synonym: renin)
Sources (6)

via Wikidata · CC0

~4 min read

Encyclopedic overview

7 sections
Contents
  • Occurrence
  • Enzymatic reaction
  • Examples
  • Recombinant chymosin
  • References
  • Further reading
  • External links

Chymosin or rennin is a protease found in rennet. It is an aspartic endopeptidase belonging to MEROPS A1 family. It is produced by newborn ruminant animals in the lining of the abomasum to curdle the milk they ingest, allowing a longer residence in the bowels and better absorption. It is widely used in the production of cheese.

Historically, chymosin was obtained by extracting it from the stomachs of slaughtered calves. Today, most commercial chymosin used in cheese production is produced recombinantly in , Aspergillus niger var. awamori, and .

Excerpted from Wikipedia’s “chymosin” article, available under the CC BY-SA 4.0 licence.