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Key Documents

T4393

Sigma-Aldrich

Trombina

lyophilized powder, 1500-3500 NIH units/mg protein (E1%/280, 18.3), suitable for cell culture

Sinônimo(s):

Fator IIa

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About This Item

Número CAS:
Número da licença da enzima:
Número CE:
Número MDL:
Código UNSPSC:
12352202
NACRES:
NA.75

fonte biológica

human plasma

Nível de qualidade

esterilidade

sterile

forma

lyophilized powder

atividade específica

1500-3500 NIH units/mg protein (E1%/280, 18.3)

técnica(s)

cell culture | mammalian: suitable

Impurezas

HIV, hepatitis B and hepatitis C, tested negative

nº de adesão UniProt

temperatura de armazenamento

−20°C

Informações sobre genes

human ... F2(2147)

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Descrição geral

Thrombin is produced from the proteolytic cleavage of inactive prothrombin in the liver. The prothrombin gene is mapped to human chromosome 11p11.2. It comprises of A and B catalytic domain, recognition domain and insertion loops. The active site residues comprise the catalytic tetrad, (histidine 57, aspartate 102, serine 195 and serine 214).

Aplicação

Thrombin from human plasma has been used:
  • as a medium supplement for the pre-treatment of endothelial cell culture prior to confocal microscopy and enzyme linked immunosorbent assay (ELISA)
  • in the gelatinization of mesenchymal stem cells (MSCs) for preparing fibrin–MSC construct
  • for screening serine protease inhibitor, OGTI from frog skin secretion

Ações bioquímicas/fisiológicas

The main function of thrombin is the cleavage of fibrinogen to fibrin, to assist stable clot formation. High levels of thrombin elicit neurotoxicity in dopaminergic neurons and contributes to the progression of Parkinson′s disease. A wide range of mutations in the prothrombin gene contributes to its deficiency resulting in coagulation disorders like dysprothrombinemia and hypoprothrombinemia. Altered thrombin levels modulates the coagulation pathway in multiple sclerosis. Patients with coronary artery disease (CAD) show elevated levels of thrombin. Thrombin accumulation in neurofibrillary tangles in the brain may contribute to the aggregation of τ protein and pathophysiology of Alzheimer disease.
Protease serina que cliva seletivamente ligações Arg-Gly do fibrinogênio para formar fibrina e fibrinopeptídeos A e B.

Definição da unidade

Activity is expressed in NIH units obtained by direct comparison to a NIH Thrombin Reference Standard

Reconstituição

When reconstituted with 1 mL water, vial contains stated activity in 0.15 M sodium chloride and 0.05 M sodium citrate, pH 6.5.

Nota de análise

The NIH assay procedure uses 0.2 ml diluted plasma (1:1 with saline) as a substrate and 0.1ml of thrombin sample (stabilized in a 1% buffered albumin solution) based on a modification of the method of Biggs. Only clotting times in the range of 15-25 seconds are used for determining thrombin concentrations.

Exoneração de responsabilidade

RESEARCH USE ONLY. This product is regulated in France when intended to be used for scientific purposes, including for import and export activities (Article L 1211-1 paragraph 2 of the Public Health Code). The purchaser (i.e. enduser) is required to obtain an import authorization from the France Ministry of Research referred in the Article L1245-5-1 II. of Public Health Code. By ordering this product, you are confirming that you have obtained the proper import authorization.

Pictogramas

Health hazard

Palavra indicadora

Danger

Frases de perigo

Declarações de precaução

Classificações de perigo

Resp. Sens. 1

Código de classe de armazenamento

10 - Combustible liquids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable


Certificados de análise (COA)

Busque Certificados de análise (COA) digitando o Número do Lote do produto. Os números de lote e remessa podem ser encontrados no rótulo de um produto após a palavra “Lot” ou “Batch”.

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Artigos

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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