ROTI®Blue is a colloidal Coomassie® brilliant blue G250 staining agent for proteins in polyacrylamid gels. Its colloidal features enable the staining agent to be bound to the proteins with high specificity and only minimally to the gel matrix. There is no longer any need for the extensive washing steps for background decoloring.
ROTI®Blue is approximately 5 x more sensitive than standard Coomassie® staining solutions. Staining time takes 2 to 12 hours depending on the desired band intensity.
Due to the fact that proteins may be stained without fixing the gel, membrane transfer and gel elution are still possible following staining.
Particularly well suited for staining prior to MS-analyses (e. g. MALDI) and prior to gel elution.
Sensitiviteit | 10 |
Toepassing | Coomassie® staining solution for colloidal staining of proteins. Destaining not required. Non-fixing staining for protein gel elution possible. Proteomics-compatible. |
Product | Sensitivity | Rapid Gel Analysis |
Gel Drying |
Elution/ Transfer |
2D- Gels |
MS- Analysis |
ROTI®Black P | 1 ng/mm2 | - | +++ | - | +++ | - |
ROTI®Blue | 10 ng/mm2 | - | +++ | +++ | - | +++ |
ROTI®Blue quick | 10 ng/mm2 | +++ | +++ | ++ | - | ++ |
ROTI®Blau R | 50 ng/mm2 | +++ | + | - | - | - |
+++: recommended +: suitable -: not recommended |
Summary Staining of Protein Gels
Product | Sensitivity | Description |
ROTI®Black P | 1 ng/mm2 | Silver staining kit. Highly sensitive. Simple, fast and reproducible. |
ROTI®Blue | 10 ng/mm2 | Coomassie®-solution for colloidal staining of proteins. Destaining not required. Non-fixing staining for protein gel elution possible. Proteomics-compatible. |
ROTI®Blue quick | 10 ng/mm2 | Solution for rapid, highly specific staining of proteins. Destaining not required. Non-fixing staining, compatible with blotting and Proteomics. |
ROTIPHORESE®Blau R | 50 ng/mm2 | Coomassie® staining solution concentrate for rapid staining. |
Coomassie® Blue G250 (C.I. 42655) | 60 ng/mm2 | Dye for performing Coomassie® staining. ODmax = 595 |
Coomassie® Blue R250 (C.I. 42660) | 50 ng/mm2 | Dye for performing Coomassie staining. ODmax = 550 |
Appearance | dark blue, colloidale solution |
pH-value | 1 - 4 |