Product nameAnti-ErbB 2 antibody
See all ErbB 2 primary antibodies
DescriptionRabbit polyclonal to ErbB 2
Specificityab131490 detects endogenous levels of total ErbB2 protein.
Tested applicationsSuitable for: WB, IHC-P, ICC/IFmore details
Species reactivityReacts with: Mouse, Rat, Human
Synthetic peptide conjugated to KLH, corresponding to a sequence around amino acids 1246-1250 (P-E-Y-L-G) derived from Human ErbB 2 (NP_001005862.1).
- MCF and SKOV3 cell extracts; Human breast carcinoma tissue; MCF7 cells
Storage instructionsShipped at 4°C. Store at -20°C. Stable for 12 months at -20°C.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: 49% PBS, 50% Glycerol, 0.88% Sodium chloride
Note: PBS is without Mg2+ and Ca2+
Concentration information loading...
PurityImmunogen affinity purified
Purification notesab131490 was purified by affinity chromatography using an epitope specific phosphopeptide. Non phosphopeptide specific antibodies were removed by chromatography using non phosphopeptide.
Our Abpromise guarantee covers the use of ab131490 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Predicted molecular weight: 137 kDa.|
|IHC-P||1/50 - 1/100.|
|ICC/IF||1/100 - 1/200. (methanol fixed)|
FunctionProtein tyrosine kinase that is part of several cell surface receptor complexes, but that apparently needs a coreceptor for ligand binding. Essential component of a neuregulin-receptor complex, although neuregulins do not interact with it alone. GP30 is a potential ligand for this receptor. Regulates outgrowth and stabilization of peripheral microtubules (MTs). Upon ERBB2 activation, the MEMO1-RHOA-DIAPH1 signaling pathway elicits the phosphorylation and thus the inhibition of GSK3B at cell membrane. This prevents the phosphorylation of APC and CLASP2, allowing its association with the cell membrane. In turn, membrane-bound APC allows the localization of MACF1 to the cell membrane, which is required for microtubule capture and stabilization.
In the nucleus is involved in transcriptional regulation. Associates with the 5'-TCAAATTC-3' sequence in the PTGS2/COX-2 promoter and activates its transcription. Implicated in transcriptional activation of CDKN1A; the function involves STAT3 and SRC. Involved in the transcription of rRNA genes by RNA Pol I and enhances protein synthesis and cell growth.
Tissue specificityExpressed in a variety of tumor tissues including primary breast tumors and tumors from small bowel, esophagus, kidney and mouth.
Involvement in diseaseHereditary diffuse gastric cancer
Chromosomal aberrations involving ERBB2 may be a cause gastric cancer. Deletions within 17q12 region producing fusion transcripts with CDK12, leading to CDK12-ERBB2 fusion leading to truncated CDK12 protein not in-frame with ERBB2.
Sequence similaritiesBelongs to the protein kinase superfamily. Tyr protein kinase family. EGF receptor subfamily.
Contains 1 protein kinase domain.
modificationsAutophosphorylated. Autophosphorylation occurs in trans, i.e. one subunit of the dimeric receptor phosphorylates tyrosine residues on the other subunit (Probable). Ligand-binding increases phosphorylation on tyrosine residues (PubMed:27134172). Signaling via SEMA4C promotes phosphorylation at Tyr-1248 (PubMed:17554007). Dephosphorylated by PTPN12 (PubMed:27134172).
Cellular localizationCytoplasm. Nucleus and Cell membrane. Cytoplasm, perinuclear region. Nucleus. Translocation to the nucleus requires endocytosis, probably endosomal sorting and is mediated by importin beta-1/KPNB1.
- Information by UniProt
- Verb b2 erythroblastic leukemia viral oncogene homolog 2, neuro/glioblastoma derived oncogene homolog antibody
- C erb B2/neu protein antibody
- CD340 antibody
All lanes : Anti-ErbB 2 antibody (ab131490) at 1/500 dilution
Lane 1 : MCF cell lysate
Lane 2 : SKOV3 cell lysate
Predicted band size: 137 kDa
Immunofluorescence analysis of ErbB 2 in methanol fixed MCF7 cells labellied with ab131490 at a 1/100 dilution.
Immunohistochemiscal analysis of ErbB 2 in Human breast cancer tissue labelled with ab131490 at a 1/50 dilution (left image), or preincubated with blocking peptide (right image).
This product has been referenced in:
- Cheng Z et al. Rab1A promotes proliferation and migration abilities via regulation of the HER2/AKT-independent mTOR/S6K1 pathway in colorectal cancer. Oncol Rep 41:2717-2728 (2019). Read more (PubMed: 30896866) »
- Sun Y et al. Angiotensin II inhibits apoptosis of mouse aortic smooth muscle cells through regulating the circNRG-1/miR-193b-5p/NRG-1 axis. Cell Death Dis 10:362 (2019). Read more (PubMed: 31043588) »