| Code | CSB-RA588766A0HU |
| Size | US$210 |
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| Application | Recommended Dilution |
|---|---|
| IHC | 1:50-1:200 |
| IF | 1:50-1:200 |
ERBB2, also known as HER2, is a receptor tyrosine kinase that plays a central role in cell proliferation, differentiation, and survival signaling. Phosphorylation at tyrosine 1139 represents a critical activation event that triggers downstream signaling cascades, making this specific modification a key biomarker in cancer research, particularly in breast cancer studies where HER2 overexpression and hyperactivation drive aggressive tumor phenotypes.
This recombinant monoclonal antibody, clone 10G9, specifically recognizes phospho-ERBB2 at the Y1139 residue in human samples. Developed using recombinant technology in a rabbit host, this antibody offers the consistency and reproducibility that demanding research applications require. Unlike traditional hybridoma-derived antibodies, recombinant production ensures sequence-defined specificity and eliminates the lot-to-lot variability that can compromise longitudinal studies and experimental reproducibility.
The antibody has been validated for immunohistochemistry and immunofluorescence applications, providing flexibility across different experimental workflows. IHC validation in paraffin-embedded human testis tissue demonstrates reliable performance in archival samples using standard citrate buffer antigen retrieval, with recommended dilutions of 1:50–1:200. Immunofluorescence studies in MCF7 cells, a well-established breast cancer cell line with known HER2 expression, confirm membrane and cytoplasmic localization patterns consistent with receptor tyrosine kinase biology.
Supplied in a glycerol-containing buffer optimized for long-term stability, this affinity-purified antibody is well-suited for researchers investigating HER2 signaling dynamics, cancer biomarker expression, and signal transduction pathways. Its phospho-specific detection capability makes it particularly valuable for studies examining receptor activation states in tumor biology and therapeutic response monitoring.
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