Thermo Scientific™ Eco31I (BsaI)
The Eco31I (BsaI) restriction enzyme recognizes GGTCTC(1/5)^ sites and cuts best at 37°C in G buffer (Isoschizomers: BsaI, Bso31I, BspTNI).
Brand: Thermo Scientific™ ER0291
Code : 88
Additional Details : Weight : 1.51950kg
5'...G G T C T C (N)1▵...3'
3'...C C A G A G (N)5▵...5'
Conditions for 100% Activity:
- 1X Buffer G:10mM Tris-HCl (pH 7.5 at 37°C), 10mM MgCl2, 50mM NaCl and 0.1mg/mL BSA
- Incubate at 37°C
- Eco31I is supplied in:10mM Tris-HCl (pH 7.5 at 25°C), 200mM KCl, 1mM DTT, 0.1mM EDTA, 0.2mg/mL BSA and 50% (v/v) glycerol
Ligation and Recleavage:
- After 50-fold overdigestion with Eco31I, more than 95% of DNA fragments can be ligated and recut
- Dam: never overlaps-no effect
- Dcm: may overlap-cleavage impaired
- CpG: may overlap-cleavage impaired
- EcoKI: never overlaps-no effect
- EcoBI: may overlap-effect not determined
Digestion of Agarose-embedded DNA:
- Minimum 5U of the enzyme are required for complete digestion of 1μg of agarose-embedded lambda DNA in 16 hours
Assayed using lambda DNA (dcm-) (#SD0021), as one of the two Eco31I recognition sites in lambda DNA is difficult to cleave. Eco31I cleavage is impaired by overlappingdcm methylation. To avoiddcm methylation, use adam,dcm- strain such as GM2163 (#M0099). Low salt, high glycerol (>5%) concentrations, pH >8.0 or a large excess of enzyme may result in star activity. Eco31I cleaves downstream of its recognition site and can generate any desired 4 base 5'-overhangs. This feature is useful for direct PCR product cloning.