This gene encodes the coagulation factor XIII A subunit. Coagulation factor XIII is the last zymogen to become activated in the blood coagulation cascade. Plasma factor XIII is a heterotetramer composed of 2 A subunits and 2 B subunits. The A subunits have catalytic function, and the B subunits do not have enzymatic activity and may serve as plasma carrier molecules. Platelet factor XIII is comprised only of 2 A subunits, which are identical to those of plasma origin. Upon cleavage of the activation peptide by thrombin and in the presence of calcium ion, the plasma factor XIII dissociates its B subunits and yields the same active enzyme, factor XIIIa, as platelet factor XIII. This enzyme acts as a transglutaminase to catalyze the formation of gamma-glutamyl-epsilon-lysine crosslinking between fibrin molecules, thus stabilizing the fibrin clot. It also crosslinks alpha-2-plasmin inhibitor, or fibronectin, to the alpha chains of fibrin. Factor XIII deficiency is classified into two categories: type I deficiency, characterized by the lack of both the A and B subunits; and type II deficiency, characterized by the lack of the A subunit alone. These defects can result in a lifelong bleeding tendency, defective wound healing, and habitual abortion. [provided by RefSeq, Jul 2008]
Alternative Names
F13A
Molecular Weight(MW)
83 kDa
Cellular Localization
Cytoplasm,Secreted.
Application
WB
Western blot analysis of extracts from Jurkat cells using Factor XIIIa Rabbit mAb at 1:1000.
IHC
Immunohistochemical analysis of paraffin-embedded human colon cancer using Factor XIIIa Rabbit mAb antibody.
Application Notes
WB:1:1000-1:5000 IHC:1:100-1:200
Additional Information
Form
Liquid
Storage Instructions
Store at -20°C.Stable for 12 months from date of receipt.
Storage Buffer
Supplied in 50mM Tris-Glycine(pH 7.4), 0.15M NaCl, 40% Glycerol, 0.01% sodium azide and 0.05% BSA.