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| Synonyms | Heparinase; heparin lyase; heparin eliminase |
|---|---|
| Source | Flavobacterium heparinum (recombinant) |
EC Number CAS_Number | 4.2.2.7 9025-39-2 |
| Catalyzed Reaction | The enzyme cleaves selectively, via an elimination mechanism, highly sulfated polysaccharide chains containing 1-4 linkages between hexosamines and O-sulfated iduronic acid residues. The reaction yields oligosaccharide products (mainly disaccharides) containing unsaturated uronic acids which can be detected by UV spectroscopy at 232 nm. The enzyme also cleaves the antithrombin III binding pentasaccharide domain in the heparin molecule. |
| Substrate Specificity | Heparin; heparan sulfate (specific activity with heparin is approx. 3 times higher than with heparan sulfate). |
| Properties: |
|
| Purity | ≥ 95 % by reversed phase HPLC analysis.
|
| Specific Activity | >90-110 IU/mg using the following Unit definition.One international unit (IU) is defined as the amount of enzyme that will liberate 1.0 µmole unsaturated oligosaccharides from porcine mucosal heparin per minute at 30 ° C and pH 7.0.(One Unit (U) is also defined in other preparations as 1 U forms 0.1 µmol of unsaturated uronic acid per hour at 25° C and pH 7.5; 1 IU is equivalent to 600U). |
| Stability | Expiration is primarily established at 3 years after manufacturing. The Heparinase I is kept frozen at -70 ° C in aqueous buffers containing Sodium Phoshate or Sucrose 5% |
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