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Recombinant human ErbB-3/HER3 Protein, 1mg  

Recombinant human ErbB-3/HER3 Protein, 1mg

Recombinant Human ErbB-3 /HER3 Protein, With C-Fc Tag (rhErbB3-Fc) Ser20-Thr643 was produced in human 293 cells (HEK293)

Synonym: recombinant human protein ERBB3, ErbB-3, HER3, HER-3, Receptor tyrosine-protein kinase erbB-3

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1 440,00 €

ErbB3,also known as Her3 (human epidermal growth factor receptor 3), is a member of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. This membrane-bound glycoprotein has a neuregulin binding domain but has not an active kinase domain. It therefore can bind the ligand but cannot mediate the intracellular signal transduction through protein phosphorylation. However, it does form heterodimers with ErbB2 or other EGFR members responsible for tyrosine phosphorylation to give a receptor complex and initiate the related pathway, which lead to cell proliferation or differentiation. Overexpression of this protein has been reported in numerous cancers, including prostate, bladder, and breast tumors. This protein has different isoforms derived from alternative splicing variants, and among which, the secreted isoform lacking the intermembrane region modulates the activity of membrane-bound form.[1-6]

Recombinant Human ErbB-3 /HER3 Protein, With C-Fc Tag (rhErbB3-Fc) Ser20-Thr643 (Accession # NP_001973.2) was produced in human 293 cells (HEK293)

Molecular Characterization
rhErbB3-Fc, fused with Fc region of human IgG1 at C-terminus and has a calculated MW of 95.4 kDa after removal of signal peptide. The predicted N-terminal is Ser 20. Protein migrates as 130-140 kDa in reduced SDS-PAGE resulting from glycosylation.

Less than 1.0 EU per μg of the rhErbB3-Fc by the LAL method.

>95% as determined by SDS-PAGE.

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

See Certificate of Analysis for details of reconstitution instruction and specific concentration.

Avoid repeated freeze-thaw cycles. No activity loss was observed after storage at:
In lyophilized state for 1 year (4°C-8°C); After reconstitution under sterile conditions for 1 month (4°C-8°C) or 3 months (-20°C to -70°C).

Immobilized Human ErbB3, Fc Tag (Cat. No. ER3-H5259) at 2 μg/mL (100 μL/well) can bind Human NRG1-beat 1 Protein with a linear range of 1-20 ng/mL (Routinely tested).



(1) Singer, E. etal., 2001, J. Biol. Chem. 276 (47): 44266–74
(2) Kraus,M.H.etal.,1989,Proc.Natl.Acad.Sci.86:9193-9197
(3) Carraway,K.L.etal.,1994,J.Biol.Chem.269:14303-14306
(4) Wallasch,C.etal.,1995,EMBO.J.14:4267-4275
(5) Alimandi,M.etal.,1995,Oncogene.10:1813-1821
(6) Gamett,D.C.etal.,1995,J.Biol.Chem.270:19022-19027