|Source||Isolated from an E.coli strain that carries the cloned Kpn I gene from Klebsiella pneumonia|
|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||B (10 mM Tris-HCl (pH 7.6 at 25°C); 10 mM MgCl2; 1 mM DTT.) + BSA|
|Enzyme activity (%)|
|100||25 - 50||25 - 50||25 - 50||75 - 100||50|
|Storage conditions||10 mM Tris-HCl(pH 7.5); 50 mM NaCl; 0,1 mM EDTA; 1 mM DTT; 200 μg/ml BSA; 50% glycerol; Store at -20°C.|
|Ligations||After 20-fold overdigestion with enzyme more than 90% 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 20 u.a. of enzyme for 16 hours at 37°C.
|Reagents Supplied with Enzyme||
10 X SE-buffer B, BSA|
|Methylation sensitivity||Not blocked by overlapping Dcm methylation (CmCWGG): GGTACCWGG|
|Inactivation 20 minutes under||80oC|
|Notes||High enzyme concentration may result in star activity. |
Long incubation with BSA is not recmmenden due to star activity.
To obtain 100% activity, BSA should be added to the 1 x reaction mix to a final concentration of 100 μg/ml.
|Quality control||Restriction Endonucleases: Quality Control|
|MSDS:||Download MSDS as PDF|
|References:||Smith, D.I., Blattner, F.R., Davies, J. Nucleic Acids Res. 3: 343-353 (1976).
Abdurashitov M.A., Tomilov V.N., Chernukhin V.A., Gonchar D. A., Degtyarev S. Kh. Comparative analysis of human chromosomal DNA digestion with restriction endonucleases in vitro and in silico. // "Medical genetics" V.6, No 8, pp 29-36, 2007
|Theoretical diagrams of DNA digestion by this enzyme for the most known DNA substrates:|
To view the fragments length values please point mouse cursor over diagram
M - ladder, 1 - Adeno-2 DNA, 2 - Lambda DNA, 3 - T7 DNA, 4 - pUC19, 5 - pBR322