R0884
T7 RNA Polymerase
recombinant, expressed in E. coli, buffered aqueous solution
Synonym(s):
RNA Polymerase T7, RNA Polymerase, T7 from E. coli HMS 174/pAR1219
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recombinant
expressed in E. coli
grade
Molecular Biology
form
buffered aqueous solution
mol wt
98.8 kDa
concentration
10,000-50,000 U/mL
UniProt accession no.
foreign activity
DNase and RNase, none detected
storage temp.
−20°C
Gene Information
bacteriophage T7 ... T7p07(1261050)
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General description
T7 RNA polymerase is highly specific for the bacteriophage T7 promoter and terminator sequences. It is extensively used to prepare RNA transcripts for stuctural and metabolic studies. The RNA transcripts can be converted to probes for sensitive hybridization detection studies. T7 polymerase and dideoxynucleotides can be used to directly sequence DNA.
Components
T7 RNA Polymerase is supplied as a solution of 100 mM NaCl, 50 mM Tris-HCl (pH 7.9), 0.1 mM EDTA, 0.1% Triton X-100, 1 mM DTT, and 50% (v/v) glycerol.
Unit Definition
One unit will catalyze the incorporation of 1 nmol of rNTP into acid-precipitable material in 60 min at 37°C.
Analysis Note
Activity assay: 40 mM Tris-HCl, pH 7.9, 6 mM MgCl2, 4 mM spermidine, 10 mM DTT, 0.5 μM each rNTP + 10 μCi α-32P-UTP, 3-10 units of enzyme, and 1 μg of a 350 bp template are incubated for 10 min at 37°C in a total volume of 100 μl. Typical results are ≥50% incorporation of labeled nucleotide into ≥90% full-length transcript.
Storage Class
10 - Combustible liquids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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