T6634
Trombina from bovine plasma
lyophilized powder, 600-2,000 NIH units/mg protein (biuret)
Sinónimos:
Factor IIa
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About This Item
Productos recomendados
form
lyophilized powder
Quality Level
specific activity
600-2,000 NIH units/mg protein (biuret)
mol wt
heavy chain ~33 kDa
light chain ~5 kDa
UniProt accession no.
application(s)
diagnostic assay manufacturing
storage temp.
−20°C
Gene Information
cow ... F2(280685)
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General description
Thrombin is a sodium-activated type II enzyme. It contains two anion binding exosites, ABE-I and ABE-II. The predominant form of thrombin in vivo is the zymogen prothrombin (factor II), which is produced in the liver. Bovine a-thrombin consists of a light chain (A chain) and a heavy chain (B chain). These two chains are joined by one disulfide bond. The B chain of a-thrombin includes a carbohydrate portion.
Application
Thrombin from bovine plasma has been used to study its effect on the perinatal rat subventricular zone cells and oligodendrocyte precursor cell proliferation, differentiation, and migration in culture. It has also been used in fibrin degradation assay to measure nattokinase activity.
Thrombin is used for site specific cleavage of recombinant fusion proteins containing an accessible thrombin recognition site for removal of affinity tags. Thrombin has been used in a study to assess global haemostasis and point of care testing.
Biochem/physiol Actions
Thrombin is a proteolytic enzyme critical in the blood clotting process and activates clotting factors V, VIII, XI, and XII. Thrombin promotes platelet aggregation. Therefore, thrombin is the final coagulation protease in hemostasis, promoting both procoagulant and anticoagulant effects. It is used to treat bleeding from capillaries and small venules.
Serín proteasa que hidroliza selectivamente los enlaces Arg-Gly en el fibrinógeno para formar fibrina y fibrinopéptidos A y B.
Unit Definition
Activity is expressed in NIH units obtained by direct comparison to a NIH thrombin reference standard.
Physical form
Lyophilized from saline sodium citrate buffer, pH 6.5
Analysis Note
En el procedimiento de análisis NIH se utilizan 0,2 ml de plasma diluido (1:1 con disolución salina) como sustrato y 0,1 ml de muestra de trombina (estabilizada en una disolución de albúmina tamponada al 1 %), basado en una modificación del método de Biggs. Para determinar las concentraciones de trombina sólo se utilizan los tiempos de coagulación comprendidos entre 15 y 25 segundos.
La actividad se expresa en unidades NIH obtenidas por comparación directa con el patrón de referencia de la trombina NIH, lote K.
Other Notes
View more information on thrombin at www.sigma-aldrich.com/enzymeexplorer.
inhibitor
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substrate
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signalword
Danger
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificados de análisis (COA)
Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»
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Artículos
Thrombin Factor IIa is an endolytic serine protease that selectively cleaves the Arg--Gly bonds of fibrinogen to form fibrin and release fibrinopeptides A and B.
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