| Recognition site | GGGCC↑C
C↓CCGGG |
| Source | E.coli strain that carries the cloned Apa I gene from Acetobacter pasteurianus |
| Assayed on | Lambda DNA (dam-dcm-, BamHI-digest) |
| Unit definition | One unit of the enzyme is the amount required to hydrolyze 1 μg of Lambda DNA (dam-dcm-, BamHI-digest) in 1 hour at 37°C in a total reaction volume of 50 μl. |
| Reaction buffer | SE-buffer Y + BSA, (33 mM Tris-acetate (pH 7.9 at 25°C); 10 mM magnesium acetate; 66 mM potassium acetate; 1 mM DTT + 100 μg/ml BSA.) |
| Optimal temperature | 37oC |
| Storage conditions | 10 mM Tris-HCl (pH 7.5); 200 mM NaCl; 0.1 mM EDTA; 7 mM 2-mercaptoethanol; 200 μg/ml BSA; 50% glycerol. Store at -20°C. |
| Ligations | After 50-fold overdigestion with enzyme more than 95% of the DNA fragments can be ligated and recut. |
| Non-specific hydrolisis | No nonspecific activity was detected after incubation of 1 μg of Lambda DNA with 100 u.a. of enzyme for 16 hours at 37°C.
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| Reagents Supplied with Enzyme |
10 X SE-buffer Y, BSA (except E019m, E019T and E020T).
For E019T and E020T an additional 10X SE-buffer ROSE is supplied.
|
| Inactivation 20 minutes under | 65oC |
| Notes | To obtain 100% activity, BSA should be added to the 1x reaction mix to a final concentration of 100 μg/ml.
Do not use BSA for long incubation.
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| MSDS: | Download MSDS as PDF |
| References: | Seurinck, J., Van de Voorde, A., Van Montagu, M. Nucleic Acids. Res.11: 4409-4415 (1983).
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