Thrombin-activatable fibrinolysis inhibitor

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carboxypeptidase B2
Identifiers
Symbol CPB2
Entrez 1361
HUGO 2300
OMIM 603101
RefSeq NM_001872
UniProt Q96IY4
Other data
Locus Chr. 13 q14.11

Thrombin-activatable fibrinolysis inhibitor (TAFI), also known as plasma carboxypeptidase B2 is a recently described plasma zymogen that, when exposed to the thrombin-thrombomodulin complex, is converted by proteolysis at Arg92 to a basic carboxypeptidase (TAFIa or activated TAFI) that inhibits fibrinolysis.

Fibrinolysis (simplified). Blue arrows denote stimulation, and red arrows inhibition.
Fibrinolysis (simplified). Blue arrows denote stimulation, and red arrows inhibition.

TAFI is produced by the liver.