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HER2/ErbB2 Polyclonal antibody

HER2/ErbB2 Polyclonal Antibody for WB, IP, IF, 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

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
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, 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 HER2/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)