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You are here:Home » Cloning » Cloning-Enzymes » RNA Polymerase, T7

RNA Polymerase, T7

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Specifications

Catalog #R2049-05
Storage Buffer20mM Potassium Phosphate (pH 7.9), 1mM DTT, 0.1mM EDTA, 100mM NaCl and 50% glycerol.
Reaction Buffer (5X)200mM Tris-HCl (pH 7.9 at 25°C), 30mM MgCl, 50mM NaCl, 10mM spermidine.
Unit DefinitionOne unit is the amount of enzyme that incorporates I nmole of [3H] GMP into acid-insoluble fraction in 1 hour at 37°C and pH 8.
PurityNuclease activity was not detected in any of the following cases, as judged from the intact gel electrophoresis:
1. After incubation of 1ug of DNA-Hind III fragments with 500 units of enzyme for 24 hours at 37°C
2. After incubation of 1ug of pBR322 DNA with 500 units of enzyme for 24 hours at 37°C
3. After incubation of 1ug of 16S and 23S rRNA with 500 units of enzyme for 24 hours at 37°C This enzyme was more than 95% homogeneous as judged from SDS-polyacrylamide gel electrophoresis.
Storage and StabilityMay be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Aliquots are stable for at least 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
SourceE. coli
Concentration~50u/ul
Important NoteThis product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications without the expressed written authorization of United States Biological.


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