| Field | Specification |
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| Assay target | |
| Assay area | |
| Detection method | |
| Detection wavelength | |
| Instrument required | |
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| Shipping | |
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Thermal stability and unfolding aggregation are used to compare proteins, for example wild-type and mutant forms. Unfolded (denatured) proteins expose more hydrophobic surface than native proteins.
Kit Components
| Component | PSA200K |
|---|---|
| 1000 x PSA dye | 60 µl |
Enough for more than 200 assays with a 0.3 ml assay volume.
Assay Principle
The PSA dye binds hydrophobic protein surfaces and fluoresces at 610 nm (excitation 550 nm). Unfolded protein gives a higher signal than native protein at the same concentration, so heating time courses give a thermal unfolding curve and half-life (t1/2), and a native / unfolded reference pair gives the percentage of unfolded protein in a sample.
Specifications
| Assay Target | Protein thermal stability |
|---|---|
| Assay Type | Stability Assay |
| Detection Method | Fluorescence |
| Detection Wavelength | Ex 550 nm / Em 610 nm |
| Plate Format | 96-well plate or cuvette |
| Instrument Required | Plate reader or fluorometer |
| Sample Types | Purified protein or protein mixture |
| Buffer Requirement | No detergent |
| Control Proteins | Lysozyme or lactate dehydrogenase at 1 mg/ml (BSA is not a good control) |
| Size | 200 assays |
| Storage | Please contact us to confirm storage conditions. |
| Shipping | Shipped frozen. |
Protocol
The manufacturer's protocol describes the procedure and reaction volumes.
- Protein stability and aggregation Assay (PDF, see Documents): Covers catalog # PSA200K.
Safety & Handling
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