Product nameAnti-ErbB 2 antibody
See all ErbB 2 primary antibodies
DescriptionRabbit polyclonal to ErbB 2
Tested applicationsSuitable for: WB, IP, IHC-Pmore details
Species reactivityReacts with: Human
Synthetic peptide within Human ErbB 2 aa 1200-1250. The exact sequence is proprietary. NP_004439.2
Database link: P04626
- WB: HeLa and HEK-293T whole cell lysatwes. IP: HeLa whole cell lysate. IHC-P: Human breast carcinoma tissue.
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle.
Storage bufferPreservative: 0.09% Sodium azide
Constituents: Tris buffered saline, 0.1% BSA
Concentration information loading...
PurityImmunogen affinity purified
Purification notesab245335 was affinity purified using an epitope specific to ErbB immobilized on solid support.
Our Abpromise guarantee covers the use of ab245335 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/2000 - 1/10000. Predicted molecular weight: 138 kDa.|
|IP||Use at 1-4 µg/mg of lysate.|
|IHC-P||1/100 - 1/500. Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.|
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
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Formalin-fixed, paraffin-embedded human ovarian breast tissue stained for ErbB 2 using ab245335 at 1/200 dilution in immunohistochemical analysis. Detection: DAB staining.
All lanes : Anti-ErbB 2 antibody (ab245335) at 1 µg/ml
Lane 1 : HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate at 50 µg
Lane 2 : HeLa whole cell lysate at 15 µg
Lane 3 : HeLa whole cell lysate at 5 µg
Lane 4 : HEK-293T (human epithelial cell line from embryonic kidney transformed with large T antigen) whole cell lysate at 50 µg
Developed using the ECL technique.
Predicted band size: 138 kDa
Exposure time: 10 seconds
ErbB 2 was immunoprecipitated from HeLa (human epithelial cell line from cervix adenocarcinoma) whole cell lysate (1 mg for IP, 20% of IP loaded) with ab245335 at 3 µg/mg lysate. Western blot was performed from the immunoprecipitate using ab245335 at 0.04 µg/ml.
Lane 1: ab245335 IP in HeLa whole cell lysate.
Lane 2: Control IgG IP in HeLa whole cell lysate.
Detection: Chemiluminescence with exposure time of 10 seconds.
ab245335 has not yet been referenced specifically in any publications.