= Aprotinin
{wiki}
<Aprotinin> is a small disulfide-stabilized <protein> that inhibits selected <serine proteases>, including trypsin-like <enzymes>. It illustrates a <protein> inhibitor that blocks access or productive interaction at a <protease> <active site> rather than being a general inhibitor of all proteolysis. Its compact, crosslinked structure also makes it a useful model for studying folding and molecular stability. <PeptideCutter - Cleavage specificities of selected enzymes and chemicals (ExPASy)>[protease specificities and inhibitor context]{ref}
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