Highly concentrated T7 RNA Polymerase for set-up of high yield in vitro transcription reactions
For in vitro use only!
Shipping: shipped on blue ice
Storage Conditions: store at -20 °C
avoid freeze/thaw cycles
Shelf Life: 12 months
Purity: ≥ 95 % (SDS-PAGE)
Concentration: 2.0 – 2.2 μg/μl (A280, ɛ = 140 L mmol-1 cm-1  in T7 RNA Polymerase HC Storage Buffer)
Bacteriophage T7 RNA Polymerase is a DNA-dependent RNA polymerase (99 kDa) that catalyzes in vitro RNA synthesis from a DNA sequence containing a T7 phage promoter.
The highly concentrated version T7 RNA Polymerase HC is ideally suited for set-up and optimization of high yield in vitro transcription reactions. The provided T7 IVT Set-up Buffer, MgCl2 and DTT solutions enable testing of different reaction conditions such as nucleotide/ MgCl2 concentrations.
Recommendation for assay set-up with minimal optimization: HighYield T7 RNA Synthesis Kit (#RNT-101).
Activity: 1 μl T7 RNA Polymerase HC generates >/= 30 μg RNA in 10 min at 37°. This is comparable to 1000 U of NEB’s T7 RNA Polymerase (High Concentration), #M0460T (activity assay conditions: 1x T7 IVT Set-up Buffer supplemented with 10 mM DTT, 12 mM MgCl2, 3 mM NTPs, 1 μl T7 RNA Polymerase HC and 1 μg DNA template (1.4 kpb RNA transcript) in 20 μl. RNA yield was determined with a fluorescence microplate assay.)
T7 RNA Polymerase HC
1x 50 μl (2 μg/μl)
50 mM Tris-HCl, 1 mM EDTA, 100 mM NaCl, 5 mM DTT, 0.1 % Triton-X-100, 50 % Glycerol (v/v), pH 8.0
T7 IVT Set-up Buffer
1x 200 μl (10x)
400 mM Tris-HCl (pH 8.0), 20 mM Spermidin
1x 100 μl (100 mM)
1x 200 μl (200 mM)
 King et al. (1986) Transcription by T7 RNA Polymerase Is Not Zinc-Dependent and Is Abolished on Amidomethylation of Cysteine-347. Biochemistry25(1):37.