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T4648

Sigma-Aldrich

Thrombin from bovine plasma

lyophilized powder, 40-500 NIH units/mg protein (biuret)

Synonym(s):

Factor IIa

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About This Item

CAS Number:
EC Number:
EC Number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

biological source

bovine plasma

form

lyophilized powder

specific activity

40-500 NIH units/mg protein (biuret)

mol wt

heavy chain ~33 kDa
light chain ~5 kDa

composition

Protein, 40-60%

UniProt accession no.

shipped in

wet ice

storage temp.

−20°C

Gene Information

cow ... F2(280685)

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General description

Thrombin is the final coagulation protease in regard to hemostasis, promoting both procoagulant and anticoagulant effects.

Application

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 persistent hypocoagulability in patients with septic shock.

Biochem/physiol Actions

Serine protease that selectively cleaves Arg-Gly bonds in fibrinogen to form fibrin and fibrinopeptides A and B.

Unit Definition

Activity is expressed in NIH units obtained by direct comparison to a NIH thrombin reference standard.

Physical form

Lyophilized powder containing sodium chloride and Tris-HCl, pH 7.0

Preparation Note

Activated with bovine brain thromboplastin.

Analysis Note

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

Other Notes

View more information on thrombin at www.sigma-aldrich.com/enzymeexplorer.

pictograms

Health hazardExclamation mark

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


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