Psp124B I

Enzyme namePsp124B I
PrototypeSacI
Known analogsSacI, SstI, Ecl136II, EcoICR I
SKUSE-E107
Turbo versionAvailable
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'… GAGCT▼C …3'
3'… C▲TCGAG …5'
SourcePseudomonas species 124B
Optimal bufferSE-buffer G (10 mM Tris-HCl (pH 7.6 at 25°C); 10 mM MgCl2; 50 mM NaCl; 1 mM DTT.)
Optimal temperature37 °C
Inactivation temperature80 °C
Buffer activity
BGOWYROSE
751001007530
Unit definitionOne 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 onLambda DNA (HindIII-digest)
Storage conditions10 mM Tris-HCl (pH 7.5); 250 mM NaCl; 0,1 mM EDTA; 7 mM 2-mercaptoethanol; 100 μg/ml BSA; 50% glycerol; Store at -20°C.
LigationAfter 20-fold overdigestion with enzyme more than 90% of the DNA fragments can be ligated and recut.
Nonspecific hydrolysisNo nonspecific activity was detected after incubation of 1 μg of Lambda DNA with 40 u.a. of enzyme for 16 hours at 37°C.
Methylation sensitivitynot tested
Reagents supplied with enzyme10 X SE-buffer G.
References
  1. Unpublished data Degtyarev, S.Kh., Dedkov, V.S., Rechkunova, N.I., Morgan, R Unpublished observations (1994).
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