Product info: BslF I

BslF I
Cat. #E479E480
Package, u.a.100500
Concentration, u.a./ml10001000

Recognition site
SourceBacillus stearothermophilus Fl
Assayed onLambda DNA
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.
Optimal SE-bufferY (33 mM Tris-acetate (pH 7.9 at 25°C); 10 mM magnesium acetate; 66 mM potassium acetate; 1 mM DTT.) + BSA
Enzyme activity (%)
25 - 5025 - 5010 - 2525 - 5010050
Optimal temperature
Storage conditions10 mM Tris-HCl (pH 7.5); 250 mM NaCl; 0.1 mM EDTA; 7 mM 2-mercaptoethanol; 50% glycerol; Store at -20°C.
LigationsAfter 3-fold overdigestion with enzyme 90% of DNA fragments can be ligated and 95% can be recut.
Non-specific hydrolisisNo nonspecific activity was detected after incubation of 1 μg of Lambda DNA with 2 u.a. of enzyme for 16 hours at 37°C.
Reagents Supplied with Enzyme 10 X SE-buffer Y, BSA
Methylation sensitivitynot tested
Inactivation 20 minutes under
NotesHigh enzyme concentration may result in star activity.
Long incubation with BSA is not recommend.
To obtain 100% activity, BSA should be added to the 1x reaction mix to a final concentration of 100 μg/ml.
There is DNA-methyltransferase activity in presence of SAM. It is maximum at 48C. In presence of 10mM MgCl2 enzyme both modifies and hydrolyzes DNA. If MgCl2 is absent enzyme modifies DNA only. And that DNA become proof against BslFI.
BslF I also cleaves the sequence GGGAC(11/15).
Quality control
Restriction Endonucleases: Quality Control
MSDS:Download MSDS as PDF
References:Nadeev, A.N., Kashirina, J.G., Nayakshina, T.N., Dedkov, V.S., Mezentseva, N.V., Tomilova, J.E., Degtyarev, S.K.; Unpublished observations. 2004
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
Fragment lengths

M - ladder, 1 - Adeno-2 DNA, 2 - Lambda DNA, 3 - T7 DNA, 4 - pUC19, 5 - pBR322