Insulinase

Definition:

EC Tree > 3 Hydrolases > 3.4 Acting on peptide bonds (peptidases) > 3.4.99 Endopeptidases of unknown catalytic mechanism (sub-subclass is currently empty) > 3.4.99.45 insulinase
Multicatalytic endopeptidase complex is the cylindrical 20-S proteasome, with alpha outer rings and catalytic beta inner rings carrying N-terminal threonine nucleophiles. It cleaves peptide bonds with very broad specificity to degrade ubiquitin-tagged proteins. It features a threonine N-terminal nucleophile catalytic chamber.

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