Knight:In vitro transcription

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Contents

Purpose

In vitro transcription using Escherichia coli RNA polymerase.

Materials

Procedure

Prepare template DNA

  1. Generate linearized template via either PCR or restriction digest.
  2. Ambion recommends a Proteinase K treatment followed by a phenol:chloroform extraction to eliminate all traces of RNase prior to subsequent reactions. (Note that if the DNA template has been linearized by restriction enzyme digestion, a similar treatment is recommended, since restriction enzymes may be contaminated with RNases.)

Set up reaction

From Epicentre.

Functional test

50 μL reaction

  • 1X E. coli RNA polymerase transcription buffer
    • 0.04 M Tris-HCl (pH 7.5)
    • 0.15 M KCl
    • 10 mM MgCl2
    • 0.01% Triton® X-100
  • 2mM DTT
  • 0.25mM NTPs
  • 1μg template

Assay test

50 μL reaction

  • 1X E. coli RNA polymerase transcription buffer
    • 0.04 M Tris-HCl (pH 7.5)
    • 0.15 M KCl
    • 10 mM MgCl2
    • 0.01% Triton® X-100
  • 10 mM DTT
  • 0.5 mM NTPs
  • 1μg template

Then analyze via native agarose gel electrophoresis.

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