Entry
Name
coagulation factor XIIa;
Hageman factor (activated);
blood-coagulation factor XIIf;
activated beta blood-coagulation factor XII;
prealbumin activator;
Hageman factor beta-fragment;
Hageman factor fragment HFf;
blood-coagulation factor XIIabeta;
prekallikrein activator;
kallikreinogen activator
Class
Hydrolases;
Acting on peptide bonds (peptidases);
Serine endopeptidases
BRITE hierarchy
Reaction(IUBMB)
Selective cleavage of Arg!Ile bonds in factor VII to form factor VIIa and factor XI to form factor XIa
Comment
Also activates plasminogen and plasma prokallikrein. Formed from the proenzyme, factor XII, by plasma kallikrein or factor XIIa. In peptidase family S1 (trypsin family)
History
EC 3.4.21.38 created 1981
Orthology
K01328 coagulation factor XII (Hageman factor)
Genes
» show all
Taxonomy
Reference
Authors
Fujikawa K, Davie EW.
Title
Human factor XII (Hageman factor).
Journal
Reference
Authors
Cho K, Tanaka T, Cook RR, Kisiel W, Fujikawa K, Kurachi K, Powers JC.
Title
Active-site mapping of bovine and human blood coagulation serine proteases using synthetic peptide 4-nitroanilide and thio ester substrates.
Journal
Reference
Authors
Que BG, Davie EW
Title
Characterization of a cDNA coding for human factor XII (Hageman factor).
Journal
Sequence
Reference
Authors
Fujikawa K.
Title
Bovine Hageman factor and its fragments.
Journal
Reference
Authors
Silverberg M, Kaplan AP.
Title
Human Hageman factor and its fragments.
Journal
Other DBs
ExPASy - ENZYME nomenclature database: 3.4.21.38