For general questions please contact our Customer Service:
Merck KGaA
Frankfurter Str. 250
64293 Darmstadt
Germany
Phone: +49 6151 72-0
Fax: +49 6151 72 2000
31 May 2012
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Native β-lactamase from Bacillus cereus 569/H9. Bacterial enzyme that destroys β-lactam antibiotics. Useful for assaying penicillins and cephalosporins.
Note: 1 unit is equivalent to 75 Pollack or 600 Levy units.
| Product information | |||
|---|---|---|---|
| Form | Lyophilized | ||
| Molar mass | 31500 | ||
| Unit definition | One unit is defined as the amount of enzyme that will hydrolyze 1.0 µmol benzyl penicillin and 1.0 µmol of cephalosporin C, respectively, per min at 25°C. | ||
| Activity | β-lactamase I: ≥500 units/vial; β-lactamase II: ≥50 units/vial | ||
| Solubility | H2O | ||
| EC number | 3.5.2.6 | ||
| RTECS | OD2265000 | ||
| CAS number | 9073-60-3 | ||
| Merck USA index | 14, 7093 | ||
| Store and ship information | |||
|---|---|---|---|
| Storage | -20°C | ||
| Ship |
Ambient Temperature Only
Harmful |
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| Safety information | |||
|---|---|---|---|
| S Phrase |
S: 36 Wear suitable protective clothing. |
||
| R Phrase |
R: 42/43 May cause sensitization by inhalation and skin contact. |
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