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HER2/ErbB2 Polyclonal antibody

HER2/ErbB2 Polyclonal Antibody for WB, IP, IF, FC, IHC, ELISA

Host / Isotype

Rabbit / IgG


human, mouse and More (1)





Cat no : 18299-1-AP


CD340, ERBB2, HER 2, HER 2/neu, HER2, MLN 19, MLN19, NEU, NGL, p185, p185erbB2, Proto oncogene c ErbB 2, Proto oncogene Neu, TKR1

Tested Applications

Positive WB detected in4T1 cells, SGC-7901 cells, MCF-7 cells, HeLa cells
Positive IP detected inSGC-7901 cells
Positive IHC detected inhuman breast cancer tissue
Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0
Positive IF detected inhuman breast cancer tissue
Positive FC detected inMCF-7 cells

Recommended dilution

Western Blot (WB)WB : 1:2000-1:12000
Immunoprecipitation (IP)IP : 0.5-4.0 ug for 1.0-3.0 mg of total protein lysate
Immunohistochemistry (IHC)IHC : 1:300-1:1200
Immunofluorescence (IF)IF : 1:50-1:500
Flow Cytometry (FC)FC : 0.20 ug per 10^6 cells in a 100 µl suspension
It is recommended that this reagent should be titrated in each testing system to obtain optimal results.
Sample-dependent, Check data in validation data gallery.

Product Information

18299-1-AP targets HER2/ErbB2 in WB, IP, IF, FC, IHC, ELISA applications and shows reactivity with human, mouse samples.

Tested Reactivity human, mouse
Cited Reactivityhuman, mouse, rat
Host / Isotype Rabbit / IgG
Class Polyclonal
Type Antibody
Immunogen Peptide
Full Name v-erb-b2 erythroblastic leukemia viral oncogene homolog 2, neuro/glioblastoma derived oncogene homolog (avian)
Calculated Molecular Weight 138 kDa
Observed Molecular Weight 185 kDa
GenBank Accession NumberBC167147
Gene Symbol ERBB2
Gene ID (NCBI) 2064
Conjugate Unconjugated
Form Liquid
Purification MethodAntigen affinity purification
Storage Buffer PBS with 0.02% sodium azide and 50% glycerol pH 7.3.
Storage ConditionsStore at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. 20ul sizes contain 0.1% BSA.

Background Information

HER2, also known as ErbB2 and Neu, is a 185-kDa transmembrane glycoprotein that is a member of the epidermal growth factor (EGF) receptor family of receptor tyrosine kinases. It has no ligand-binding domain of its own and therefore cannot bind growth factors. However, it does bind tightly to other ligand-bound EGF receptor family members to form a heterodimer, stabilizing ligand binding and enhancing kinase-mediated activation of downstream signalling pathways, such as those involving mitogen-activated protein kinase and phosphatidylinositol-3 kinase. Amplification and/or overexpression of HER2 have been reported in numerous cancers, including breast and ovarian tumors. HER2 is a therapeutic target for the treatment of breast cancer and other carcinomas. This antibody raised against a synthesized peptide corresponding to 1237-1255aa of human HER2 recognizes the 185-kDa full-length glycosylated form and other lower molecular-mass forms of HER2, including the truncated form.


Product Specific Protocols
WB protocol for HER2/ErbB2 antibody 18299-1-APDownload protocol
IHC protocol for HER2/ErbB2 antibody 18299-1-APDownload protocol
IF protocol for HER2/ErbB2 antibody 18299-1-APDownload protocol
IP protocol for HER2/ErbB2 antibody 18299-1-APDownload protocol
Standard Protocols
Click here to view our Standard Protocols



Cell Metab

Targeting Erbin-mitochondria axis in platelets/megakaryocytes promotes B cell-mediated antitumor immunity

Authors - Zilong Zhang

Cell Res

Protein C receptor is a therapeutic stem cell target in a distinct group of breast cancers.

Authors - Daisong Wang


Efficient Delivery of GSDMD-N mRNA by Engineered Extracellular Vesicles Induces Pyroptosis for Enhanced Immunotherapy

Authors - Yuqi Xing

Nat Commun

Targeting 17q23 amplicon to overcome the resistance to anti-HER2 therapy in HER2+ breast cancer.

Authors - Yunhua Liu

J Immunother Cancer

Genome-scale CRISPR-Cas9 screen reveals novel regulators of B7-H3 in tumor cells.

Authors - Shasha Zhao

Cancer Res

Disrupting Circadian Rhythm via the PER1-HK2 Axis Reverses Trastuzumab Resistance in Gastric Cancer.

Authors - Jiao Wang


The reviews below have been submitted by verified Proteintech customers who received an incentive forproviding their feedback.


Vanina (Verified Customer) (07-28-2021)

MDA-MB-453 cell line was transfected with different concentrations of HER2/Erbb2 siRNA for 48h. Western blot using HER2/Erbb2 rabbit Proteintech antibody (18299-1-AP) at 1:2,000 dillution confirms the HER2/Erbb2 knockdown.

  • Applications: Western Blot
  • Primary Antibody Dilution: 1:2,000
  • Cell Tissue Type: MDA-MB-453 breast cancer cell line
HER2/ErbB2 Antibody Western Blot validation (1:2,000 dilution) in MDA-MB-453 breast cancer cell line (Cat no:18299-1-AP)