Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

Immunohistochemistry, Western Blot

Cited:

Immunocytochemistry

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG1 Clone # 66219
View all ErbB3/Her3 Primary Antibodies »

Product Specifications

Immunogen

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

Specificity

Detects human ErbB3 in direct ELISAs and Western blots. In direct ELISAs and Western blots, this antibody shows no cross-reactivity with recombinant human (rh) EGF R, rhErbB4, or rhErbB2.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG1

Applications for Human ErbB3/Her3 Antibody

Application
Recommended Usage

Immunohistochemistry

8-25 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human lung, human lung cancer tissue, and human breast

Western Blot

1 µg/mL
Sample: Recombinant Human ErbB3/Her3 Fc Chimera (Catalog # 348-RB)

Reviewed Applications

Read 1 review rated 5 using MAB348 in the following applications:

Formulation, Preparation, and Storage

Purification

Protein A or G purified from ascites

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

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

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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.

Calculators

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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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. 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

P21860

Additional ErbB3/Her3 Products

Product Documents for Human ErbB3/Her3 Antibody

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

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Product Specific Notices for Human ErbB3/Her3 Antibody

For research use only

Citations for Human ErbB3/Her3 Antibody

Customer Reviews for Human ErbB3/Her3 Antibody (1)

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  • Human ErbB3/Her3 Antibody
    Name: Anonymous
    Application: Western Blot
    Sample Tested: Lung carcinoma
    Species: Human
    Verified Customer | Posted 01/24/2022
    Human ErbB3/Her3 Antibody MAB348

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