Sigma Thrombin 凝血酶 （货号：T4648）价格

英文名:Thrombin
性状:本品为白色或类白色的冻干块状物或粉末
用途:一种由凝血酶前体（血浆中的必要成分）形成的蛋白质水解酶,催化纤维蛋白元变成纤维蛋白而促使血液凝固。用于毛细血管出血的局部止血.
Sigma相关资料如下:
Sigma  T4648  Thrombin from bovine plasma
lyophilized powder, 40-300 NIH units/mg protein （biuret）
Synonym: Factor IIa
CAS Number: 9002-04-4
Enzyme Commission （EC） Number: 3.4.21.5  （ BRENDA | IUBMB ）
EC Number: 232-648-7
MDL number: MFCD00166053
Description
Frequently Asked Questions Live Chat ａnd Frequently Asked Questions  are available for this Product.
Analysis Note Activity is expressed in NIH units obtained by direct comparison to a NIH Thrombin ReferenceStandard, Lot K.
  The NIH assay procedure uses 0.2 mL of diluted plasma （1:1 with saline） as a substrate ａnd 0.1 mL of thrombinsample （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.
Biochem/physiol Actions Serine protease that selectively cleaves Arg-Gly bonds in fibrinogen to form fibrin ａnd fibrinopeptides A ａnd B.
Other Notes View more information on thrombin at .
Preparation Note Activated with bovine brain thromboplastin.
Physical form Lyophilized powder containing sodiumchloride and Tris-HCl, pH 7.0
Properties
form lyophilized powder
composition Protein, 40-60% 
EQP level Premium
storage temp. −20°C