AspA2 I

Enzyme name AspA2 I
Prototype AvrII
Known analogs AvrII, BlnI, XmaJI
SKU SE-E245
Turbo version Available
High-concentration version Not available
Restriction type Type IIPiType IIP enzymes are classical Type II restriction enzymes with palindromic recognition sequences and symmetric cleavage sites.
Recognition site
5'… C▼CTAGG …3'
3'… GGATC▲C …5'
Source Arthrobacter species A2
Optimal buffer SE-buffer W (10 mM Tris-HCl (pH 8.5 at 25°C); 10 mM MgCl2; 100 mM NaCl; 1 mM DTT.)
Optimal temperature 37 °C
Inactivation temperature 80 °C
Buffer activity
BGOWYROSE
1050751007510
Unit definition One unit of the enzyme is the amount required to hydrolyze 1 μg of Lambda DNA (HindIII-digest) in 1 hour at 37°C in a total reaction volume of 50 μl.
Assayed on Lambda DNA (HindIII-digest)
Storage conditions 10 mM Tris-HCl (pH 7.5); 100 mM NaCl; 0.1 mM EDTA; 7 mM 2-mercaptoethanol; 100 μg/ml BSA; 50% glycerol. Store at -20°C.
Ligation After 10-fold overdigestion with enzyme more than 90% of the DNA fragments can be ligated and recut.
Nonspecific hydrolysis 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.
Methylation sensitivity not tested
Reagents supplied with enzyme 10 X SE-buffer W, BSA
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.
References
  3. Unpublished data Abdurashitov, M.A., Dedkov, V.S., Shinkarenko, N.M., Popichenko, D.V., Degtyarev, S.K Unpublished observations (2003).
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