Anti-ErbB3 / HER3 antibody [SP71] (ab93739) is a rabbit monoclonal antibody that is used to detect ErbB3 / HER3 in Flow Cytometry (Intra), Flow Cytometry, IHC-P, mIHC. Suitable for Human samples.
- Validated for multiplex IHC on the Leica BOND® MAX using Opal reagents
-Using biophysical QC, antibody identity is confirmed at a molecular level for unrivalled batch-batch consistency
pH: 7.6
Preservative: 0.1% Sodium azide
Constituents: PBS, 1% BSA
mIHC | IHC-P | Flow Cyt (Intra) | |
---|---|---|---|
Human | Tested | Tested | Tested |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/100 | Notes 1/100 for 30 mins at RT. Perform heat mediated antigen retrieval before commencing with IHC staining protocol by boiling tissue section in 1mM EDTA, pH 8.0 for 10 min followed by cooling at RT for 20 min. Perform heat-mediated antigen retrieval before commencing with IHC staining protocol. |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/50 | Notes - |
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Tyrosine-protein kinase that plays an essential role as cell surface receptor for neuregulins. Binds to neuregulin-1 (NRG1) and is activated by it; ligand-binding increases phosphorylation on tyrosine residues and promotes its association with the p85 subunit of phosphatidylinositol 3-kinase (PubMed:20682778). May also be activated by CSPG5 (PubMed:15358134). Involved in the regulation of myeloid cell differentiation (PubMed:27416908).
HER3, ERBB3, Receptor tyrosine-protein kinase erbB-3, Proto-oncogene-like protein c-ErbB-3, Tyrosine kinase-type cell surface receptor HER3
Anti-ErbB3 / HER3 antibody [SP71] (ab93739) is a rabbit monoclonal antibody that is used to detect ErbB3 / HER3 in Flow Cytometry (Intra), Flow Cytometry, IHC-P, mIHC. Suitable for Human samples.
- Validated for multiplex IHC on the Leica BOND® MAX using Opal reagents
-Using biophysical QC, antibody identity is confirmed at a molecular level for unrivalled batch-batch consistency
pH: 7.6
Preservative: 0.1% Sodium azide
Constituents: PBS, 1% BSA
Purified from TCS by protein A/G.
The ErbB3 protein also known as HER3 is a member of the epidermal growth factor receptor (EGFR) family. It belongs to the ErbB receptor tyrosine kinase family but lacks intrinsic kinase activity. The HER3 protein has a molecular weight of approximately 180 kDa. You will find HER3 expressed in various tissues with high expression in the epithelial tissues where it plays a role in normal cellular processes. HER3 interacts with multiple ligands facilitating cellular communication and growth regulation.
HER3 is essential for activating important signaling pathways that regulate proliferation differentiation and survival. The ErbB3 protein forms heterodimers with other ErbB family members such as ErbB2 (HER2) which is necessary for its signaling capability. The HER3 protein is abundant in heart and nervous tissues indicating its role in cardiovascular and neurological functions. Its activation modulates gene expression through downstream effectors mediated by dimerization.
HER3 plays a pivotal role in the PI3K/Akt and MAPK signaling pathways. These pathways are fundamental in cellular responses like growth and survival. HER3 serves as a major partner for HER2 in these signaling cascades enhancing downstream signaling effects. HER3's connection to these pathways makes it a critical node collaborating closely with proteins such as HER2 and EGFR to maintain efficient communication and function within these networks.
HER3 associates strongly with cancer and cardiovascular diseases. Its overexpression in certain cancers such as breast cancer leads to enhanced tumor growth and resistance to therapy. HER3’s relationship with the HER2 protein is especially significant in HER2-positive breast cancer where their interaction drives tumor progression. Additionally alterations in HER3 expression or function impact cardiovascular diseases as it plays a significant role in heart and vascular cell behavior. Recognizing HER3's involvement in these conditions allows for targeted therapeutic approaches and improves disease management strategies.
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Membranous staining on paraffin-embedded sections of human small intestine. The section was incubated with ab93739 at 1:100 dilution (0.7 μg/ml) for 30 mins at room temperature. The secondary antibody staining was achieved with Rabbit specific IHC polymer detection kit HRP/DAB (Rabbit specific IHC polymer detection kit HRP/DAB ab209101). Hematoxylin was used as a counter stain.
Heat mediated antigen retrieval was performed with Citrate buffer (pH 6.0, epitope retrieval solution1) for 20 mins.
The immunostaining was performed on a Leica Biosystems BOND® RX instrument.
An immunohistochemical staining of human small intestine labelling ErbB3 / HER3 (SP71) with ab93739 at dilution 1:100.
ab93739 at 1/100 dilution staining ErbB 3 in formalin-fixed, paraffin-embedded Human small intestine tissue.
Flow cytometry analysis of MCF7 (human breast adenocarcinoma epithelial cell) labeling ErbB3 / HER3 with purified ab93739 at 1/50 dilution (10.5 μg/ml) (red). Cells were fixed with 4% paraformaldehyde and permeabilised with 90% methanol. Goat anti rabbit IgG (Alexa Fluor® 488, Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) ab150077) at 1/2000 dilution was used as a secondary antibody. Isotype control -Rabbit monoclonal IgG (Rabbit IgG, monoclonal [EPR25A] - Isotype Control ab172730) / Black. Unlableled control -Unlabelled cells / blue.
Fluorescence multiplex immunohistochemical analysis of the human jejunum (Formalin/PFA-fixed paraffin-embedded sections).
Panel A: merged staining of anti-Muc2 (Anti-MUC2 antibody [EPR23479-47] ab272692, magenta; Opal™690), anti-Eph receptor B2 (Anti-Eph receptor B2 antibody [EPR22427-268] ab252935, green; Opal™520) and anti-ErbB3 / HER3 (Anti-ErbB3 / HER3 antibody [SP71] - BSA and Azide free ab236220, red; Opal™570) on human jejunum. Panel B: anti-Muc2 stained on goblet cells. Panel C: anti-Eph receptor B2 stained on intestinal stem and progenitor cells. Panel D: anti-ErbB3 / HER3 stained on epithelial cells. Opal Polymer HRP Ms + Rb was used as a secondary antibody.
The section was incubated in three rounds of staining: in the order of Anti-MUC2 antibody [EPR23479-47] ab272692 at 1/2000 dilution (0.252 μg/ml), Anti-Eph receptor B2 antibody [EPR22427-268] ab252935 at 1/1000 dilution (0.527 μg/ml), and Anti-ErbB3 / HER3 antibody [SP71] - BSA and Azide free ab236220 at 1/3000 dilution (0.75 μg/ml) for 30 mins at room temperature. Each round was followed by a separate fluorescent tyramide signal amplification system.
The immunostaining was performed on a Leica Biosystems BOND® RX instrument with an Opal™ 4-color kit. Image acquisition was performed with Leica SP8 confocal microscope.
Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution2) for 20 mins. DAPI (blue) was used as a nuclear counter stain.
This data was developed using Anti-ErbB3 / HER3 antibody [SP71] - BSA and Azide free ab236220, the same antibody clone in a different buffer formulation.
Fluorescence multiplex immunohistochemical analysis of the human colon (Formalin/PFA-fixed paraffin-embedded sections).
Panel A: merged staining of anti-Muc2 (Anti-MUC2 antibody [EPR23479-47] ab272692, magenta; Opal™690), anti-Eph receptor B2 (Anti-Eph receptor B2 antibody [EPR22427-268] ab252935, green; Opal™520) and anti-ErbB3 / HER3 (Anti-ErbB3 / HER3 antibody [SP71] - BSA and Azide free ab236220, red; Opal™570) on human colon. Panel B: anti-Muc2 stained on goblet cells. Panel C: anti-Eph receptor B2 stained on intestinal stem and progenitor cells. Panel D: anti-ErbB3 / HER3 stained on epithelial cells. Opal Polymer HRP Ms + Rb was used as a secondary antibody.
The section was incubated in three rounds of staining: in the order of Anti-MUC2 antibody [EPR23479-47] ab272692 at 1/2000 dilution (0.252 μg/ml), Anti-Eph receptor B2 antibody [EPR22427-268] ab252935 at 1/1000 dilution (0.527 μg/ml), and Anti-ErbB3 / HER3 antibody [SP71] - BSA and Azide free ab236220 at 1/3000 dilution (0.75 μg/ml) for 30 mins at room temperature. Each round was followed by a separate fluorescent tyramide signal amplification system.
The immunostaining was performed on a Leica Biosystems BOND® RX instrument with an Opal™ 4-color kit. Image acquisition was performed with Leica SP8 confocal microscope.
Heat mediated antigen retrieval with Tris-EDTA buffer (pH 9.0, epitope retrieval solution2) for 20 mins. DAPI (blue) was used as a nuclear counter stain.
This data was developed using Anti-ErbB3 / HER3 antibody [SP71] - BSA and Azide free ab236220, the same antibody clone in a different buffer formulation.
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