β-Lactamase from Enterobacter cloacae Type IV, lyophilized powder, 0.2-0.6 units/mg protein (using benzylpenicillin) Sigma P4524
По запросу
- Производитель: Sigma
- Каталожный номер:
P4524 - CAS номер : 9073-60-3
Analysis Note
Protein determined by biuret.
Biochem/physiol Actions
β--lactamase inactivates β-lactam antibiotics by breaking open the β-lactam ring.
Packaging
100, 250 units in glass bottle
Unit Definition
One unit will hydrolyze 1.0 μmole of benzylpenicillin per min at pH 7.0 at 25 °C. This International Unit (using benzylpenicillin as substrate) is approximately equal to 600 Levy or 75 Pollock units.
Physical form
Lyophilized powder containing sodium phosphate buffer salts
Application
β--lactamase is used to inactivate β-lactam antibiotics by breaking open the β-lactam ring. β--lactamase is used to study antibiotic resistance and resistance suppression. Product P4524 is produced from Enterobacter cloacae and is provided as a lyophilized powder.
Характеристики реактива | |
storage temp. | 2-8°C |