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Key Product Details

Species Reactivity

Human

Applications

CyTOF-ready, ELISA Capture (Matched Antibody Pair), Flow Cytometry, Neutralization

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # 66223

Product Summary for Human ErbB3/Her3 Antibody

Immunogen

Mouse myeloma cell line NS0-derived recombinant human ErbB3/Her3
Ser20-Thr643
Accession # P21860

Specificity

Detects human ErbB3/Her3 in ELISAs. Does not cross-react with recombinant EGF R.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Scientific Data Images for Human ErbB3/Her3 Antibody

Cell Proliferation Induced by NRG1-beta 1/HRG1-beta 1 and Neutralization by Human ErbB3/Her3 Antibody.

Cell Proliferation Induced by NRG1-beta 1/HRG1-beta 1 and Neutralization by Human ErbB3/Her3 Antibody.

Recombinant Human NRG1-1 beta1/HRG1-1 beta1 (Catalog # 377-HB) stimulates proliferation in the MCF-17 human breast cancer cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human NRG1-1 beta1/HRG1-1 beta1 (10 ng/mL) is neutralized (green line) by increasing concentrations of Human ErbB3/Her3 Monoclonal Antibody (Catalog # MAB3481). The ND50 is typically 0.0075-0.03 µg/mL.

Applications for Human ErbB3/Her3 Antibody

Application
Recommended Usage

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Flow Cytometry

2.5 µg/106 cells
Sample: MCF‑7 human breast cancer cell line

Neutralization

Measured by its ability to neutralize NRG1‑ beta1/HRG1‑ beta1-induced proliferation in the MCF‑7 human breast cancer cell line. The Neutralization Dose (ND50) is typically 0.0075-0.03 µg/mL in the presence of 10 ng/mL Recombinant Human NRG1‑ beta1/HRG1‑ beta1 Extracellular Domain.

Human ErbB3/Her3 Sandwich Immunoassay

ELISA Capture (Matched Antibody Pair)
Recommended Concentration: 2-8 µg/mL
Use in combination with these reagents:
  • Detection Reagent: Human ErbB3/Her3 Biotinylated Antibody (Catalog # BAM348)
  • Standard: Recombinant Human ErbB3/Her3 Fc Chimera Protein, CF (Catalog # 348-RB)
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 3 reviews rated 5 using MAB3481 in the following applications:

Published Applications

Read 12 publications using MAB3481 in the following applications:

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Endotoxin Level

<0.10 EU per 1 μg of the antibody by the LAL method.

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS.

Reconstitution Buffer Available:
Size / Price
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Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: ErbB3/Her3

ErbB3, also called Her3 (human epidermal growth factor receptor 3), is a type I membrane glycoprotein that is a member of the ErbB family of tyrosine kinase receptors. ErbB family members serve as receptors for the epidermal growth factor (EGF) family of growth factors. Among ErbB family members, ErbB3 is unique in that it contains a defective kinase domain. ErbB3 is expressed in keratinocytes, melanocytes, skeletal muscle cells, embryonic myoblasts and Schwann cells. Monomeric ErbB3 serves as a low affinity receptor for the heregulins (HRG). ErbB3 heterodimerizes with ErbB2 to form a high affinity receptor complex. In contrast, ErbB3 homodimerization or heterodimerization with ErbB4 forms a low affinity heregulin-binding complex. Because ErbB3 contains a defective kinase domain, the kinase domain of ErbB2 is responsible for initiating the tyrosine phosphorylation signal through the heterodimeric receptor. It has been found that a discrete three amino acid signal in the ErbB3 cytoplasmic domain is critical for transactivation of ErbB2. The cytoplasmic domain of ErbB3 also contains six consensus binding motifs for the SH2 domain of the regulatory p85 subunit of phosphoinositide 3-kinase (PI 3-kinase, PI3K) as well as one proline-rich consensus binding motif for the SH3 domain of p85. Human ErbB3 consists of 1342 amino acids (aa) with a 19 aa signal sequence, a 624 aa extracellular domain, a 21 aa transmembrane region, and a 678 aa cytoplasmic domain. ErbB3 appears to play roles in development, cancer, communication at the neuromuscular junction, and regulation of cell growth and differentiation.

References

  1. Kraus, M.H. et. al. (1989) Proc. Natl. Acad. Sci. USA 86:9193.
  2. Plowman, G.D. et. al. (1990) Proc. Natl. Acad. Sci. USA 87:4905.
  3. Carraway, K.L. 3rd et. al. (1994) J. Biol. Chem. 269:14303.
  4. Emkey, R. and C.R. Kahn (1997) J. Biol. Chem. 272:31172.
  5. Sundaresan, S. et. al. (1998) Endocrinology 139:4756.
  6. Hellyer, N.J. et. al. (1998) Biochem. J. 333:757.
  7. Schaefer, G. et. al. (1999) J. Biol. Chem. 274:859.
  8. Hellyer, N.J. et. al. (2001) J. Biol. Chem. 276:42153.
  9. Schlessinger, J. (2000) Cell 103:211.
  10. Daly, R.J. (1999) Growth Factors 16:255.

Long Name

Receptor Tyrosine Protein Kinase ErbB3

Alternate Names

HER3

Entrez Gene IDs

2065 (Human); 13867 (Mouse)

Gene Symbol

ERBB3

UniProt

Product Documents for Human ErbB3/Her3 Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human ErbB3/Her3 Antibody

For research use only

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Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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