Her2 / ERBB2 Protein, Human, Recombinant (ECD, domain I, His Tag)

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Her2 / ERBB2 Protein, Human, Recombinant (ECD, domain I, His Tag): Product Information

Purity
> (30.3+63.2) % as determined by SDS-PAGE.
Endotoxin
< 1.0 EU per μg protein as determined by the LAL method.
Activity
Testing in progress
Protein Construction
A DNA sequence encoding the human ERBB2 (AAA75493.1) (Met1-Cys195) was expressed with a polyhistidine tag at the C-terminus.
Accession#
Expressed Host
HEK293 Cells
Species
Human
Predicted N Terminal
Thr 23
Molecule Mass
The recombinant human ERBB2 consists of 184 amino acids and predicts a molecular mass of 20.9 kDa.
Formulation
Lyophilized from sterile PBS, pH 7.4.
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.

Her2 / ERBB2 Protein, Human, Recombinant (ECD, domain I, His Tag): Images

Her2 / ERBB2 Protein, Human, Recombinant (ECD, domain I, His Tag): Alternative Names

CD340 Protein, Human; ENV Protein, Human; ENVW Protein, Human; ERVWE1 Protein, Human; HER-2 Protein, Human; HER-2/neu Protein, Human; HER2 Protein, Human; HERV-7q Protein, Human; HERV-W-ENV Protein, Human; HERV7Q Protein, Human; HERVW Protein, Human; HERVWENV Protein, Human; MLN 19 Protein, Human; MLN19 Protein, Human; NEU Protein, Human; NGL Protein, Human; TKR1 Protein, Human

Her2 / ERBB2 Background Information

Epidermal growth factor receptor 2 (HER2), also known as ErbB2, NEU, and CD34, is a type I membrane glycoprotein, and belongs to the epidermal growth factor (EGF) receptor family. HER2 protein cannot bind growth factors due to the lacking of ligand binding domain of its own and autoinhibited constitutively. However, HER2 forms a heterodimer with other ligand-bound EGF receptor family members, therefore stabilizes ligand binding and enhances kinase-mediated activation of downstream molecules. HER2 plays a key role in development, cell proliferation and differentiation. HER2 gene has been reported to associate with malignancy and a poor prognosis in numerous carcinomas, including breast, prostate, ovarian, lung cancers and so on.
Full Name
erb-b2 receptor tyrosine kinase 2
References
  • Krawczyk N, et al. (2009) HER2 status on persistent disseminated tumor cells after adjuvant therapy may differ from initial HER2 status on primary tumor. Anticancer Res. 29(10): 4019-24.
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