EGFR Antibody (H9B4)

Novus Biologicals | Catalog # NBP2-34243

Novus Biologicals
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Key Product Details

Species Reactivity

Human, Mouse (Negative), Rat (Negative)

Applications

Western Blot, Simple Western, Immunoprecipitation, Protein Array

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 kappa Clone # H9B4
View all EGFR Primary Antibodies »

Product Specifications

Immunogen

Purified EGFR from A431 cells.

Reactivity Notes

Does not react with Mouse or Rat.

Localization

Cell surface

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1 kappa

Theoretical MW

170 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

200ug/ml of antibody purified from Bioreactor Concentrate by Protein A or G. Prepared in 10 mM PBS with 0.05% BSA & 0.05% azide. Also available WITHOUT BSA & azide at 1.0 mg/ml. (NBP2-34628)

Antibody with azide - store at 2 to 8C. Antibody without azide - store at -20 to -80C.

Scientific Data Images for EGFR Antibody (H9B4)

Western Blot: EGFR Antibody (H9B4) [NBP2-34243]

Western Blot: EGFR Antibody (H9B4) [NBP2-34243]

Western Blot: EGFR Antibody (H9B4) [NBP2-34243] - Western Blot Analysis of A431 cell lysate using EGFR Mouse Monoclonal Antibody (H9B4).
Simple Western: EGFR Antibody (H9B4) [NBP2-34243]

Simple Western: EGFR Antibody (H9B4) [NBP2-34243]

Simple Western: EGFR Antibody (H9B4) [NBP2-34243] - Simple Western lane view shows a specific band for EGF R/ErbB1 in 0.2 mg/ml of A431 lysate(s). This experiment was performed under reducing conditions using the 12-230 kDa separation system.
Simple Western: EGFR Antibody (H9B4) [NBP2-34243]

Simple Western: EGFR Antibody (H9B4) [NBP2-34243]

Simple Western: EGFR Antibody (H9B4) [NBP2-34243] - Simple Western lane view shows a specific band for EGF R/ErbB1 in 0.2 mg/ml of HeLa lysate(s). This experiment was performed under reducing conditions using the 12-230 kDa separation system.
Simple Western: EGFR Antibody (H9B4) [NBP2-34243]

Simple Western: EGFR Antibody (H9B4) [NBP2-34243]

Simple Western: EGFR Antibody (H9B4) [NBP2-34243] - Electropherogram image of the corresponding Simple Western lane. EGF R/ErbB1 antibody was used at 10 ug/ml dilution of A431 and HeLa lysates(s) respectively.
Protein Array: EGFR Antibody (H9B4) [NBP2-34243]

Protein Array: EGFR Antibody (H9B4) [NBP2-34243]

Protein Array: EGFR Antibody (H9B4) [NBP2-34243] - Analysis of Protein Array containing more than 19,000 full-length human proteins using EGFR Antibody (H9B4) Z- and S- Score: The Z-score represents the strength of a signal that a monoclonal antibody (Monoclonal Antibody) (in combination with a fluorescently-tagged anti-IgG secondary antibody) produces when binding to a particular protein on the HuProt(TM) array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If targets on HuProt(TM) are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-score. S-score therefore represents the relative target specificity of a Monoclonal Antibody to its intended target. A Monoclonal Antibody is considered to specific to its intended target, if the Monoclonal Antibody has an S-score of at least 2.5.

Applications for EGFR Antibody (H9B4)

Application
Recommended Usage

Immunoprecipitation

1-2 ug/500 ug protein lysate

Simple Western

10 ug/ml

Western Blot

1-2 ug/ml
Application Notes
Optimal dilution for a specific application should be determined.
Western Blot: 1-2ug/ml for 2 hours at RT.
See Simple Western Antibody Database for Simple Western validation: Tested in A431 lysate, HeLa lysate, separated by Size, antibody dilution of 10 ug/mL, apparent MW was 180-190 kDa

Formulation, Preparation, and Storage

Purification

Protein A or G purified

Formulation

10 mM PBS with 0.05% BSA

Preservative

0.05% Sodium Azide

Concentration

0.2 mg/ml

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at 4C.

Background: EGFR

Epidermal growth factor receptor (EGFR), also known as ErbB1 and HER1, is a type I glycoprotein that belongs the ErbB subfamily of receptor tyrosine kinases (RTKs), which includes ErbB2/HER2, ErbB3/HER3, and ErbB4/HER4 (1,2). EGFR plays an important role in epithelial cell development and homeostasis and as a driver of tumorigenesis in cancer (1,2). The human EGFR is protein 1210 amino acids (aa) in length with a theoretical molecular weight (MW) of 134 kDa (1). The protein consists of a short signal peptide, an extracellular domain (ECD) divided into four subdomains (I-IV), a transmembrane region, an intracellular juxtamembrane segment, a tyrosine kinase domain, and C-terminal tail (1-3). Within the ECD, human EGFR has 88-90% aa sequence identity with mouse and rat EGFR. EGFR has four known specific ligands: EGF, amphiregulin, epigen, and transforming growth factor alpha (TGF-alpha). EGFR ligands betacellulin, epiregulin, and herapin binding (HB)-EGF have dual specificity with ErbB4 (1,3). Ligand binding to the extracellular domain of EFGR leads to receptor homodimerization, or heterodimerization with other ErbB family members, and EGFR activation. This results in subsequent phosphorylation and activation of intracellular signaling pathways, such as MAPK and PI3K/Akt (2,3). EGFR signaling is essential for many cellular processes including proliferation, differentiation, migration, and apoptosis (1,3,5).

In addition to its role in normal development, EGFR mutations or overexpression is observed in many tumors, including breast cancer, non-small cell lung carcinoma (NSCLC), colon cancer, and more (3-6). Small molecule tyrosine kinase inhibitors (TKIs), like gefitinib, erlotinib, and afatinib, have shown great efficacy in treating patients with EGFR activating mutations, especially for NSCLC (4-6). However, most patients eventually develop acquired resistance to TKIs and thus combination and alternative therapies are in development (4-6). A third-generation TKI, osimertinib, is approved for NSCLC patients with resistance to first-line EGFR TKI treatment (6). Additionally, combination therapies of EGFR TKIs with monoclonal antibody immunotherapies, like anti-PD-L1, are being further investigated in clinical trials (6).

References

1. Roskoski R Jr. Small molecule inhibitors targeting the EGFR/ErbB family of protein-tyrosine kinases in human cancers. Pharmacol Res. 2019; 139:395-411. https://doi.org/10.1016/j.phrs.2018.11.014

2. Sigismund S, Avanzato D, Lanzetti L. Emerging functions of the EGFR in cancer. Mol Oncol. 2018; 12(1):3-20. https://doi.org/10.1002/1878-0261.12155

3. Normanno N, De Luca A, Bianco C, et al. Epidermal growth factor receptor (EGFR) signaling in cancer. Gene. 2006; 366(1):2-16. https://doi.org/10.1016/j.gene.2005.10.018

4. Liu Q, Yu S, Zhao W, Qin S, Chu Q, Wu K. EGFR-TKIs resistance via EGFR-independent signaling pathways. Mol Cancer. 2018; 17(1):53. https://doi.org/10.1186/s12943-018-0793-1

5. Harrison PT, Vyse S, Huang PH. Rare epidermal growth factor receptor (EGFR) mutations in non-small cell lung cancer. Semin Cancer Biol. 2020; 61:167-179. https://doi.org/10.1016/j.semcancer.2019.09.015

6. Wu SG, Shih JY. Management of acquired resistance to EGFR TKI-targeted therapy in advanced non-small cell lung cancer. Mol Cancer. 2018; 17(1):38. https://doi.org/10.1186/s12943-018-0777-1

Long Name

Epidermal Growth Factor Receptor

Alternate Names

EGF R, ErbB, ErbB1, HER-1

Gene Symbol

EGFR

UniProt

P00533

Additional EGFR Products

Product Documents for EGFR Antibody (H9B4)

Certificate of Analysis

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Product Specific Notices for EGFR Antibody (H9B4)

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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