
Merck SYPRO Orange Protein Gel Stain
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SYPRO® Orange Protein Gel Stain
유통기한
≥6 mo. (when stored desiccated and protected from light at room temperature, 4 °C or 20 °C.)
Quality Level
technique(s)
protein staining: suitable
형광
λex 300,470 nm; λem 570 nm
SYPRO Orange is similar to SYPRO Red although it is somewhat brighter and gives slightly higher background fluorescence. For those using a laser-excited gel scanner, an argon-ion laser-based instrument is recommended for SYPRO Orange. The dye is efficiently excited by UV or broad band illumination. It is not suitable for staining proteins on blots or in IEF gels and shows reduced sensitivity when staining proteins on 2-D gels.
SYPRO Orange is:
- Highly sensitive. The stain can detect 1 to 2 ng of protein per minigel band, making it more sensitive than Coomassie Brilliant Blue or silver staining.
- Rapid. Staining is complete in less than one hour
- Simple. After electrophoresis, the gel is stained, rinsed and photographed; no fixation or destaining steps are required
- Compatible with standard laboratory equipment. Stained proteins can be visualized with a standard 300 nm UV transilluminator or laser scanner.
- Cost-effective. Staining with SYPRO Orange is less expensive than silver staining and requires less time.
- Low protein-to-protein variability. The dye interacts with the SDS coat around the protein, giving more consistent staining between different types of proteins compared to Coomassie or silver staining.
- Selective for proteins. SYPRO Orange detects proteins as small as 6.5 kDa and does not stain nucleic acids or lipopolysaccharides. It does stain glycosylated proteins.
- Broad linear range of detection. The fluorescence intensity of the stained bands is linear with protein quantity over three orders of magnitude (a much broader range than either Coomassie or silver staining).
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