BssNA I

Enzyme nameBssNA I
PrototypeSnaI
Known analogsBst1107I, BstZ17I
SKUSE-E261
Turbo versionNot available
High-concentration versionNot available
Restriction typeType IIPiType IIP enzymes are classical Type II restriction enzymes with palindromic recognition sequences and symmetric cleavage sites.
Recognition site
5'… GTA▼TAC …3'
3'… CAT▲ATG …5'
SourceBacillus stearothermophilus NA
Optimal bufferSE-buffer W (10 mM Tris-HCl (pH 8.5 at 25°C); 10 mM MgCl2; 100 mM NaCl; 1 mM DTT.)
Optimal temperature37 °C
Inactivation temperatureне инактивируется
Buffer activity
BGOWYROSE
50507510075100
Unit definitionOne 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.
Assayed onLambda DNA
Storage conditions10 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.
LigationAfter 10-fold overdigestion with enzyme more than 90% of DNA fragments can be ligated and recut.
Nonspecific hydrolysisNo nonspecific activity was detected after incubation of 1 μg of Lambda DNA with 10 u.a. of enzyme for 16 hours at 37°C.
Methylation sensitivitynot tested
Reagents supplied with enzyme10 X SE-buffer W, BSA
NotesHigh enzyme concentration may result in star activity 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
  1. Unpublished data Shinkarenko, N.M., Dedkov, V.S., Shevchenko, A.V., Abdurashitov, M.A., Degtyarev, S.K Unpublished observations (1996).
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