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Concept information

Preferred term

Proinsulin  

Type

  • mesh:Descriptor

Definition

  • A pancreatic polypeptide of about 110 amino acids, depending on the species, that is the precursor of insulin. Proinsulin, produced by the PANCREATIC BETA CELLS, is comprised sequentially of the N-terminal B-chain, the proteolytically removable connecting C-peptide, and the C-terminal A-chain. It also contains three disulfide bonds, two between A-chain and B-chain. After cleavage at two locations, insulin and C-peptide are the secreted products. Intact proinsulin with low bioactivity also is secreted in small amounts.

Narrower concepts

Entry terms

  • 9035-68-1

In other languages

URI

http://data.loterre.fr/ark:/67375/JVR-H34TJ9MG-2

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