| Code | CSB-RA005947A133phHU |
| Size | US$210 |
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| Application | Recommended Dilution |
|---|---|
| WB | 1:500-1:5000 |
| IHC | 1:50-1:200 |
| IF | 1:20-1:200 |
CREB1 (cAMP-responsive element-binding protein 1) serves as a critical transcription factor that orchestrates cellular responses to diverse extracellular signals, including growth factors, hormones, and neurotransmitters. Phosphorylation at serine 133 represents the key activation event that enables CREB1 to recruit transcriptional coactivators and drive expression of genes involved in cell proliferation, survival, and memory formation. Detecting this specific phosphorylation state provides researchers with direct insight into active signaling pathways in their experimental systems.
This recombinant rabbit monoclonal antibody, clone 3C11, offers the reproducibility and consistency that phospho-specific detection demands. Because recombinant antibodies are produced from defined sequences rather than hybridoma-derived sources, researchers can expect uniform performance across experiments and over time, eliminating the lot-to-lot variability that can complicate longitudinal studies or multi-site collaborations.
Validation data demonstrates reliable performance across multiple experimental platforms. Western blot analysis detects phospho-CREB1 at the expected 46 kDa molecular weight in both HeLa and 293 whole cell lysates, confirming specificity for human samples. For tissue-based studies, immunohistochemistry staining has been validated in paraffin-embedded human breast cancer and lung cancer specimens using citrate buffer antigen retrieval, revealing clear nuclear localization patterns consistent with CREB1's function as a transcription factor. Immunofluorescence applications show robust nuclear staining in HeLa cells, enabling subcellular localization studies in cultured cell models.
This antibody supports investigations into epigenetics and nuclear signaling pathways, making it particularly valuable for researchers studying cAMP-mediated signal transduction, cancer biology, neuronal plasticity, or metabolic regulation where CREB1 activation plays a central role.
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