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Human HER2 / ErbB2 Protein

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Human ERBB2 Protein Product Information
Synonym:CD340,HER-2,HER-2/neu,HER2,MLN 19,MLN19,NEU,NGL,TKR1
Protein Construction:A DNA sequence encoding the human ERBB2 (NP_004439.2) (Met1-Thr652) was expressed with five amino acids (DDDDK) at the C-terminus.
Species:Human
Expressed Host:Human Cells
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.
Human ERBB2 Protein QC Testing
Purity:> 95 % as determined by SDS-PAGE.
Endotoxin:< 1.0 EU per μg protein as determined by the LAL method.
Stability:Samples are stable for up to twelve months from date of receipt at -70℃
Predicted N Terminal:Thr 23
Molecule Mass:The recombinant human ERBB2 consists 636 amino acids and predicts a molecular mass of 70 kDa.
Formulation:Lyophilized from sterile PBS, pH 7.4.
1. Normally 5 % - 8 % trehalose and mannitol 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.
Human ERBB2 Protein Usage Guide
Storage: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.
Human ERBB2 Protein SDS-PAGE
Human HER2 / ErbB2 Protein
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Expression host: Human Cells  
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Expression host: Human Cells  
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50714-M08H-50
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50 µg 
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Expression host: Human Cells  
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Expression host: Human Cells  
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80079-RCCH-20
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20 µg 
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Expression host: Human Cells  
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80079-R02H-50
80079-R02H-100
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Expression host: Human Cells  
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80079-R08H-50
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Expression host: Human Cells  
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90295-C02H-50
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Expression host: Human Cells  
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90295-C08H-50
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Expression host: Human Cells  
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70024-D08H-50
70024-D08H-100
50 µg 
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Expression host: Human Cells  
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90020-K02H-50
90020-K02H-100
50 µg 
100 µg 
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Expression host: Human Cells  
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90020-K08H-50
90020-K08H-100
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HER2/ErbB2 Background

Human epidermal growth factor receptor 2 (HER2), also known as ErbB2, NEU, and CD340, 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.

Human HER2/ErbB2 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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    Catalog: 10004-HCCH-50
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      All information of our products is subject to change without notice. Please refer to COA enclosed in shipped package for the newest information.
      Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"