Promotional price valid on web orders only. Your contract pricing may differ. Interested in signing up for a dedicated account number?
Learn More

Thermo Scientific™ PstI

The PstI restriction enzyme recognizes CTGCA^G sites and cuts best at 37°C in O buffer (Isoschizomers: BspMAI).

Manufacturer:  Thermo Scientific™ ER0612

 View more versions of this product

Catalog No. FERER0612

Add to cart



Lambda DNA digested with PstI, 0.7% agarose, 28 cleavage sites

conventional restriction endonucleases are a large collection of high quality restriction enzymes, optimized to work in one of the buffers of the Five Buffer System. In addition, the universal Tango buffer is provided for convenience in double digestions. All of the enzymes exhibit 100% activity in the recommended buffer and reaction conditions. To ensure consistent performance, Thermo Scientific restriction enzyme reaction buffers contain premixed BSA, which enhances the stability of many enzymes and binds contaminants that may be present in DNA preparations.

5'..C T G C A▵G...3'

3'..G▵A C G T C...5'

Conditions for 100% Activity

  • 1X Buffer O:50mM Tris-HCl (pH 7.5 at 37°C), 10mM MgCl2, 100mM NaCl and 0.1mg/mL BSA
  • Incubate at 37°C

Storage Buffer

  • PstI is supplied in: 10mM Tris-HCl (pH7.4 at 25°C), 200mM NaCl, 1mM DTT, 0.1mM EDTA, 0.15% Triton X-100, 0.2mg/mL BSA and 50% (v/v) glycerol

Ligation and Recleavage

  • After 50-fold overdigestion with PstI, more than 95% of the DNA fragments can be ligated and recut

Methylation Effects

  • Dam: never overlaps —no effect
  • Dcm: never overlaps —no effect
  • CpG: never overlaps —no effect
  • EcoKI: never overlaps —no effect
  • EcoBI: never overlaps —no effect

Digestion of Agarose-embedded DNA

  • Minimum 5units of the enzyme are required for complete digestion of 1µg of agarose-embedded lambda DNA in 16hours

Compatible Ends

  • Alw21I, ApaI, BseSI, Eco24I, Mph1103I, PstI, SacI, SdaI


Conditions of high pH, low salt, high glycerol, 8% DMSO can cause star activity (Malyguine, E., et al., Gene, 8, 163-177, 1980). Surrounding sequences: the presence of adjacent runs of G-C base pairs confers significant resistance to cleavage (Armstrong, K. and Bauer, W.R., NAR, 10, 993-1007, 1982). 100% dUTP incorporation at the recognition site reduces PstI cleavage to 25% (Glenn, T.C., et al., Biotechniques, 17, 1086-1090, 1994). PstI will not cut AGCTGCAG when methylated by AluI methyltransferase.



5 x 3,000U
Provide Content Correction

We continue to work to improve your shopping experience and your feedback regarding this content is very important to us. Please use the form below to provide feedback related to the content on this product.

Product Title

By clicking Submit, you acknowledge that you may be contacted by Fisher Scientific in regards to the feedback you have provided in this form. We will not share your information for any other purposes. All contact information provided shall also be maintained in accordance with our Privacy Policy.

Cancel Submit