T7513

Thrombin from bovine plasma

lyophilized powder, ≥2,000 NIH units/mg protein (E1%/280 = 19.5)

• Synonym(s): Factor IIa
• CAS Number: 9002-04-4
• EC Number: 3.4.21.5 (BRENDA, IUBMB)
• EC Number: 232-648-7
• MDL number: MFCD00166053
• UNSPSC Code: 12352204
• NACRES: NA.54

Properties

• form: lyophilized powder
• Quality Level: 200
• specific activity: ≥2,000 NIH units/mg protein (E1%/280 = 19.5)
• mol wt: heavy chain ~33 kDa; light chain ~5 kDa
• UniProt accession no.: P00735
• application(s): diagnostic assay manufacturing
• storage temp.: −20°C
• Gene Information: cow ... F2(280685)

Description

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 from saline sodium citrate buffer, pH 6.5

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.

Safety Information

• Pictograms: GHS08,GHS07
• Signal Word: Danger
• Hazard Statements: H315,H319,H334,H335
• Precautionary Statements: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable