| Field | Specification |
|---|---|
| Organism | |
| Applications | |
| Assay type | |
| Assay target | |
| Assay area | |
| Target type | |
| Detection method | |
| Instrument required | |
| Storage | |
| Shipping | |
| Catalog no. (Mfr.) | |
| Main SKU |
Bacterial DNA topoisomerase II (gyrase) converts relaxed circular DNA into supercoiled DNA (the DNA supercoiling reaction).
Kit Components
| Component | GDSA100KE |
|---|---|
| 10 x Buffer | 400 µl |
| Relaxed DNA (250 µg/ml) | 105 µl |
| 10 mM ATP | 220 µl |
| 5 x Gel loading buffer | 550 µl |
| E. coli gyrase (2000 nM, 100 x) | 25 µl |
Final reaction conditions: 20 mM Tris-HCl pH 8, 35 mM NH4OAc, 4.6% glycerol, 1 mM DTT, 0.005% Brij35, 8 mM MgCl2, 12.5 µg/ml relaxed plasmid DNA, 1 mM ATP and 20 nM gyrase. A reaction without ATP can serve as negative control.
Assay Principle
Supercoiled and relaxed DNA are separated by agarose gel electrophoresis, so E. coli gyrase activity shows as relaxed plasmid DNA converted to the supercoiled form, visible as separate bands after staining.
Specifications
| Assay Target | E. coli gyrase DNA supercoiling |
|---|---|
| Target Type | DNA Topoisomerase II (Gyrase) |
| Organism | E. coli |
| Assay Type | Enzyme Activity Assay |
| Detection Method | Gel Electrophoresis |
| Instrument Required | Gel electrophoresis + UV imaging |
| Gel Conditions | 1% agarose in 1 x TAE, 100 V for 90 min to 2 hours |
| Size | 100 assays |
| Storage | Please contact us to confirm storage conditions. |
| Shipping | Shipped frozen. |
Protocol
The manufacturer's protocol describes the procedure and reaction volumes.
- Gel-Based E. coli Gyrase DNA Supercoiling Assay (PDF, see Documents): Covers catalog # GDSA100KE.
Safety & Handling
Can’t find the exact format you need? We can help you source or customize this E. coli gyrase DNA supercoiling assay — including larger pack sizes, bulk reagents, bulk enzyme, or a protocol adapted to your samples. Click Talk to a Scientist, email support@biohippo.com, or explore our Research Services. Our team will be in touch shortly.