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Chimerx/TspGW I/2501/250 u

  
  2026-04-08
  
Details
Source

Purified from E coli strain that carries the cloned tspGWRI gene from Thermus species GW

Unit Definition

One unit is the amount of enzyme required to digest 1µg of pBR322 DNA to obtain a stable digestion pattern in 1 hour in a total reaction volume of 50µl

Reaction Temperature

70°C

Heat Inactivation

No

Assay Unit Substrate

pBR322 DNA

Reaction Buffer

10 mM Tris-HCl (pH 8.5 at 25°C)1 mM dithiothreitol10 mM MgCl2+Enhancers (1)

Notes:

  • Avoid multiple cycles of freezing / thawing of the stock reaction buffer; No more than three [3] times.
  • Thawing should be preformed at temperatures not exceeding 10°C.
  • Recommended procedure is to divide the provided reaction buffer into smaller portions and preserve them at -70°C for long term storage.
  • Recommended short term storage of reaction buffer is at -20°C.
  • Storage Buffer

    10 mM Tris-HCl (pH 7.5 at 25°C)0.1 mM EDTA50 mM NaCl1 mM dithiothrietol100 µg/ml bovine serum albumin50% (v/v) glycerol

    Assay Conditions

    10 mM Tris-HCl (pH 8.5 at 25°C)10 mM MgCl21 mM dithiothreitol1 µg pBR322 DNAIncubation is at 70°C for 1 hour in a total reaction volume of 50µl

    Notes
  • It is not recommended to use more than 2 units per 50µl reaction.
  • Digestion should be performed for over two [2] hours.
  • As TspGW I binds DNA very tightly, excess amount of TspGW I added can retard DNA migration on a gel, even in the presence of denaturing agents.
  • TspGW I is very highly stimulated by the presence of two restriction sites in opposite orientation; Both the distance between recognition sequences and their immediate neighborhood also affects the cleavage effectiveness; Single site substrates are cleaved slowly.
  • Storage Conditions

    Store at -20°CShipped on dry ice

    References

    (1) Zylicz-Stachula, A., Harasimowicz-Slowinska, R., Sobolewski, I. and Skowron, P.M. (2002) Nucleic Acids Research 30, 7 e 33

    Downloads

    Certificate of Analysis PDF - Current Lot

    Categories

    Restriction Endonucleases

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