Recognition site:
CAGNNN↑CTG
GTC↓NNNGAC
Source: Pseudomonas stutzeri 217
Assayed on: Lambda DNA
Unit definition: One unit of the enzyme is the amount required to hydrolyze 1 μg of Lambda DNA in 1 hour at 37°C in a total reaction volume of 50 μl.
Optimal SE-buffer: Y (33 mM Tris-acetate (pH 7.9 at 25°C); 10 mM magnesium acetate; 66 mM potassium acetate; 1 mM DTT.)
Activity in SEBuffers:
SEBuffer B 25 - 50%
SEBuffer G 50 - 75%
SEBuffer O 10 - 25%
SEBuffer W 25 - 50%
SEBuffer Y 100%
SEBuffer ROSE 100%
When using a buffer other than the optimal (suppied) SEBuffer, it may be necessary to add more enzyme to achieve complete digestion.
Optimal temperature: 37°C
Storage conditions: 10 mM Tris-HCl (pH 7.5); 100 mM NaCl; 0.1 mM EDTA; 7 mM 2-mercaptoethanol; 200 μg/ml BSA, 50% glycerol;
Store at: -20°C.
Ligation: After 5-fold overdigestion with enzyme > 95% of Lambda DNA fragments can be ligated with T4 DNA Ligase and recut.
Non-specific hydrolisis: No nonspecific
activity was detected after incubation of 1 μg of Lambda DNA with 10 u.a. of enzyme for 16 hours at 37°C.
Reagents supplied with enzyme: 10 X SE-buffer Y
Methylation sensitivity: not tested
Inactivation: 20 minutes under 65°C
Notes: When using a buffer other than the optimal (supplied) SE-buffer, it may be necessary to add more enzyme to achieve complete digestion.
PstN I - CAGNNN↑CTG - GTC↓NNNGAC - Restriction Endonuclease from Sibenzyme
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