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Chymotrypsin

Cat. No. M9708
Chymotrypsin Structure
Synonym:

α-Chymotrypsin

Size Price Availability Quantity
500mg USD 60  USD60 In stock
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Quality Control & Documentation
  • Purity: 1500u/mg, USP grade
  • COA
  • MSDS
Biological Activity

α-Chymotrypsin is a serine peptidase and has 241 amino acid residues contained in three polypeptide chains (A chain-13 residues, B chain-131 residues, and C chain-97 residues) linked by disulfide bridges.

Chemical Information
CAS Number 9004-07-3
Solubility (25°C) Soluble at 10mg/ml in 1mM HCl
Storage -20°C, protect from light, dry, sealed
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] S Yamashita, et al. Br J Surg. Visualization of the leakage of pancreatic juice using a chymotrypsin-activated fluorescent probe

[2] K L Honea, et al. J Assist Reprod Genet. Effect of limited proteolysis with alpha-chymotrypsin on semen with an abnormal sperm penetration assay and possible application for in vitro fertilization or intrauterine insemination

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