ErbB 3 (ERBB3) Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	IF, IHC, WB
Recommend Dilution	Western Blot: 1/500-1/1000. Immunohistochemistry on paraffin sections: 1/50-1/200. Immunofluorescence: 1/50-1/200.
Reactivity	Human, Mouse, Rat
Host	Rabbit
Clonality	Polyclonal
Immunogen	Synthetic peptide, corresponding to amino acids 1250-1300 of Human ErbB-3.
Specificity	This antibody detects endogenous levels of ErbB-3 protein.
Formulation	Phosphate buffered saline (PBS), pH~7.2 containing 0.05% Sodium Azide as preservative. State: Aff - Purified State: Liquid purified Ig fraction (> 95% pure by SDS-PAGE).
Concentration	1.0 mg/ml
Purification	Affinity Chromatography using epitope-specific immunogen.
Conjugation	Unconjugated
Storage Condition	Store undiluted at 2-8°C for one month or (in aliquots) at -20°C for longer. Avoid repeated freezing and thawing.
Predicted Protein Size	~ 148, 185 kDa
Gene Name	erb-b2 receptor tyrosine kinase 3
Database Link	Entrez Gene 13867 MouseEntrez Gene 29496 RatEntrez Gene 2065 Human UniProt ID P21860
Background	The ErbB3 gene encodes a member of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. ErbB3 is a membrane-bound protein which has a neuregulin binding domain but not an active kinase domain. It can therefore bind this ligand but cannot convey a signal into the cell via 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.
Synonyms	ERBB-3, c-erbB-3, HER-3
Reference Data
Protein Families	Adult stem cells, Druggable Genome, Protein Kinase, Secreted Protein, Stem cell - Pluripotency, Transmembrane
Protein Pathways	Calcium signaling pathway, Endocytosis, ErbB signaling pathway

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