Recombinant
RabMAb

Recombinant Anti-ErbB 4 (phospho Y1284) antibody [EPR2273(2)] - BSA and Azide free (ab232527)

Overview

  • Product name

    Anti-ErbB 4 (phospho Y1284) antibody [EPR2273(2)] - BSA and Azide free
    See all ErbB 4 primary antibodies
  • Description

    Rabbit monoclonal [EPR2273(2)] to ErbB 4 (phospho Y1284) - BSA and Azide free
  • Host species

    Rabbit
  • Specificity

    This antibody detects Erb B4 phosphorylated at Tyrosine 1284 and may also detect Erb B2 phosphorylated at Tyrosine 1248.
  • Tested applications

    Suitable for: WB, ICC/IF, Flow Cytmore details
  • Species reactivity

    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide within Human ErbB 4 aa 1250 to the C-terminus (phospho Y1284). The exact sequence is proprietary.
    Database link: Q15303

  • Positive control

    • ICC/IF: A431 cells.
  • General notes

    Ab232527 is the carrier-free version of ab109273. This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.

     

    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    Use our conjugation kits  for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

    ab232527 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    This product is a recombinant rabbit monoclonal antibody.

Properties

Applications

Our Abpromise guarantee covers the use of ab232527 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
WB Use at an assay dependent concentration. Detects a band of approximately 180 kDa (predicted molecular weight: 147 kDa).
ICC/IF Use at an assay dependent concentration.
Flow Cyt Use at an assay dependent concentration.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

Target

  • Function

    Specifically binds and is activated by neuregulins, NRG-2, NRG-3, heparin-binding EGF-like growth factor, betacellulin and NTAK. Interaction with these factors induces cell differentiation. Not activated by EGF, TGF-A, and amphiregulin. The C-terminal fragment (CTF) of isoform JMA-A CYT-2 (containing E4ICD2) can stimulate transcription in the presence of YAP1. ERBB4 intracellular domain is involved in the regulation of cell growth. Conflicting reports are likely due at least in part to the opposing effects of the isoform-specific and nuclear-translocated ERBB4 intracellular domains (E4ICD1 and E4ICD2). Overexpression studies in epithelium show growth inhibition using E4ICD1 and increased proliferation using E4ICD2. E4ICD2 has greater in vitro kinase activity than E4ICD1. The kinase activity is required for the nuclear translocation of E4ICD2.
  • Tissue specificity

    Expressed at highest levels in brain, heart, kidney, in addition to skeletal muscle, parathyroid, cerebellum, pituitary, spleen, testis and breast. Lower levels in thymus, lung, salivary gland, and pancreas. Isoform JM-A CYT-1 and isoform JM-B CYT-1 are expressed in cerebellum, but only the isoform JM-B is expressed in the heart.
  • Sequence similarities

    Belongs to the protein kinase superfamily. Tyr protein kinase family. EGF receptor subfamily.
    Contains 1 protein kinase domain.
  • Post-translational
    modifications

    Isoform JM-A CYT-1 and isoform JM-A CYT-2 but not isoform JM-B CYT-1 and isoform JM-B CYT-2 are processed by ADAM17. Proteolytic processing in response to ligand or 12-O-tetradecanoylphorbol-13-acetate stimulation results in the production of 120 kDa soluble receptor forms and intermediate membrane-anchored 80 kDa fragments (m80HER4), which are further processed by a presenilin-dependent gamma-secretase to release the respective cytoplasmic intracellular domain E4ICD (either E4ICD1/s80Cyt1 or E4ICD2/s80Cyt2). Membrane-anchored 80 kDa fragments of the processed isoform JM-A CYT-1 are more readily degraded by the proteasome than fragments of isoform JM-A CYT-2 suggesting a prevalence of E4ICD2 over E4ICD1.
    Ligand-binding increases phosphorylation on tyrosine residues. Isoform JM-A CYT-2 is constitutively phosphorylated on tyrosine residues in a ligand-independent manner. E4ICD2 but not E4ICD1 is phosphorylated on tyrosine residues.
    Ubiquitinated. The ERBB4 intracellular domain is ubiquitinated and targeted to proteosomal degradation during mitosis mediated by the APC/C complex. Isoform JM-A CYT-1 and isoform JM-B CYT-1 are ubiquitinated by WWP1. The ERBB4 intracellular domain (E4ICD1) is ubiquitinated, and this involves NEDD4.
  • Cellular localization

    Membrane and Nucleus. Following proteolytical processing E4ICD (E4ICD1 or E4ICD2 generated from the respective isoforms) is translocated to the nucleus. Significantly more E4ICD2 than E4ICD1 is found in the nucleus. E4ICD2 colocalizes with YAP1 in the nucleus.
  • Information by UniProt
  • Database links

  • Alternative names

    • 4ICD antibody
    • ALS19 antibody
    • Avian erythroblastic leukemia viral oncogene homolog 4 antibody
    • Avian erythroblastic leukemia viral v erb b2 oncogene homolog 4 antibody
    • E4ICD antibody
    • EC 2.7.10.1 antibody
    • Erbb4 antibody
    • ERBB4 intracellular domain antibody
    • ERBB4_HUMAN antibody
    • HER 4 antibody
    • HER4 antibody
    • human epidermal growth factor receptor 4 antibody
    • Mer4 antibody
    • MGC138404 antibody
    • Oncogene ERBB4 antibody
    • p180erbB4 antibody
    • Proto-oncogene-like protein c-ErbB-4 antibody
    • Receptor protein tyrosine kinase erbB 4 precursor antibody
    • Receptor tyrosine protein kinase erbB 4 antibody
    • s80HER4 antibody
    • Tyrosine kinase type cell surface receptor HER4 antibody
    • Tyrosine kinase-type cell surface receptor HER4 antibody
    • v erb a avian erythroblastic leukemia viral oncogene homolog like 4 antibody
    • v erb a erythroblastic leukemia viral oncogene homolog 4 antibody
    • v-erb-a erythroblastic leukemia viral oncogene homolog 4 (avian) antibody
    • V-ERB-B2 avian erythroblastic leukemia viral oncogene homolog 4 antibody
    • Verba avian erythroblastic leukemia viral oncogene homolog like 4 antibody
    • Verba erythroblastic leukemia viral oncogene homolog 4 antibody
    • VERBB2 antibody
    see all

Images

  • ab109273 at 1/10 dilution staining ErbB 4 in HeLa cells by Flow cytometry.
    Green: Permeabilized A431 cells, untreated
    Red: Permeabilized A431 cells, treated with EGF.
    Blue: Permeabilized A431 cells, treated with EGF and preincubated with phospho-ErbB 4 (pY1284) peptide
    Orange: Permeabilized A431 cells, treated with EGF and preincubated with non-phospho-ErbB 4(pY1284) peptide.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109273).

  • Immunofluorescent analysis of A431 (human epidermoid carcinoma cell line) cells labeling ErbB 4 (phospho Y1284) using ab232527 at 1/100 dilution.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab109273).

References

ab232527 has not yet been referenced specifically in any publications.

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