HER3 / ERBB3 Protein, Human, Recombinant (His Tag)

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HER3 / ERBB3 Protein, Human, Recombinant (His Tag): Product Information

Purity
> 95 % as determined by SDS-PAGE
Endotoxin
< 1.0 EU per μg of the protein as determined by the LAL method
Activity
1. Measured by its binding ability in a functional ELISA.
2. Immobilized human ErbB3 at 2 μg/mL (100 μl/well) can bind human NRG1 (isoform Beta1), The EC50 of human NRG1 (isoform Beta1) is 0.43 μg/mL.
Protein Construction
A DNA sequence encoding the extracellular domain (Met 1-Thr 643) of human ErbB3 (NP_001973.2) precursor was expressed, with a C-terminal polyhistidine tag.
Accession#
Expressed Host
HEK293 Cells
Species
Human
Predicted N Terminal
Ser 20
Molecule Mass
The recombinant human ErbB3 protein consists of 635 amino acids after the removal of signal peptide and has a calculated molecular mass of 70.2 kDa. As a result of glycosylation, the recombinant ErbB3 migrates as an approximately 100-110 kDa band in SDS-PAGE under reducing conditions.
Formulation
Lyophilized from sterile PBS, pH 7.5
1. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Specific concentrations are included in the hardcopy of COA.
2. Please contact us for any concerns or special requirements.
Please refer to the specific buffer information in the hard copy of CoA.
Shipping
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.
Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Stability & Storage
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃
Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Reconstitution
A hardcopy of COA with reconstitution instruction is sent along with the products. Please refer to it for detailed information.

HER3 / ERBB3 Protein, Human, Recombinant (His Tag): Images

HER3 / ERBB3 Protein, Human, Recombinant (His Tag): Alternative Names

c-erbB-3 Protein, Human; c-erbB3 Protein, Human; EEBB3 Protein, Human; ErbB-3 Protein, Human; erbB3-S Protein, Human; HER3 Protein, Human; LCCS2 Protein, Human; MDA-BF-1 Protein, Human; p180-ErbB3 Protein, Human; p45-sErbB3 Protein, Human; p85-sErbB3 Protein, Human

HER3 / ERBB3 Background Information

ErbB3, also known as Her3(human epidermal growth factor receptor3), 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., and therefore can not mediate the intracellular signal transduction through protein phosphorylation. However, its heterodimer with ErbB2 or other EGFR members responsible for tyrosine phosphorylation forms a receptor complex with high affinity, and initiates the related pathway which lead to cell proliferation or differentiation. ErbB3 has been shown to implicated 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.
Full Name
erb-b2 receptor tyrosine kinase 3
References
  • Kraus M.H., et al.,(1989), Isolation and characterization of ERBB3, a third member of the ERBB/epidermal growth factor receptor family: evidence for overexpression in a subset of human mammary tumors. Proc. Natl. Acad. Sci. U.S.A. 86:9193-9197.
  • Plowman G.D., et al., (1990), Molecular cloning and expression of an additional epidermal growth factor receptor-related gene.Proc. Natl. Acad. Sci. U.S.A. 87:4905-4909.
  • Katoh M., et al.,(1993), c-erbB3 gene encodes secreted as well as transmembrane receptor tyrosine kinase.Biochem. Biophys. Res. Commun. 192:1189-1197.
  • Development and characterization of small bispecific albumin-binding domains with high affinity for ErbB3
    Author
    Nilvebrant, J;Astrand, M;Löfblom, J;Hober, S;
    Year
    2013
    Journal
    Cell. Mol. Life Sci.
    Application
    binding
  • Site-Specific Photoconjugation of Beta-Lactamase Fragments to Monoclonal Antibodies Enables Sensitive Analyte Detection via Split-Enzyme Complementation
    Author
    Yu, F;Alesand, V;Nygren, PÅ;
    Year
    2018
    Journal
    Biotechnol J
  • Optimization of HER3 expression imaging using affibody molecules: Influence of chelator for labeling with indium-111
    Author
    Rinne, SS;Leitao, CD;Mitran, B;Bass, TZ;Andersson, KG;Tolmachev, V;Ståhl, S;Löfblom, J;Orlova, A;
    Year
    2019
    Journal
    Sci Rep
    Application
    SPR
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