Target Synonym: HER;LCCS;Proto-oncogene-like protein c-ErbB;Tyrosine kinase-type cell surface receptor HER;MDA-BF;p180-ErbB;p45-sErbB;p85-sErbB;ERBB3;ErbB-3;HER3;LCCS2;MDA-BF-1;c-erbB-3;c-erbB3;erbB3-S;p180-ErbB3;p45-sErbB3;p85-sErbB3;Proto-oncogene-like protein c-ErbB-3;Tyrosine kinase-type cell surface receptor HER3;EEBB3
Background: This gene encodes a member of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. This membrane-bound protein has a neuregulin binding domain but not an active kinase domain. It therefore can bind this ligand but not convey the signal into the cell through protein phosphorylation. However, it does form heterodimers with other EGF receptor family members which do have kinase activity. Heterodimerization leads to the activation of pathways which lead to cell proliferation or differentiation. Amplification of this gene and/or overexpression of its protein have been reported in numerous cancers, including prostate, bladder, and breast tumors. Alternate transcriptional splice variants encoding different isoforms have been characterized. One isoform lacks the intermembrane region and is secreted outside the cell. This form acts to modulate the activity of the membrane-bound form. Additional splice variants have also been reported, but they have not been thoroughly characterized.
Immunogen: A synthetic phosphopeptide corresponding to residues around Tyr1289 of the Human Phospho-HER3/ErbB3
Buffer: 10 mM sodium HEPES, 150 mM NaCl, 100 μg/mL protein protectant, 50% glycerol, pH 7.5
Dilution: WB 1:2000-1:20000;
Calculated MW: 148 kDa
Observed MW: 250 kDa
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