• Product name

  • Description

    Rabbit polyclonal to STUB1/CHIP
  • Host species

  • Tested applications

    Suitable for: IHC-P, WB, ICC/IFmore details
  • Species reactivity

    Reacts with: Mouse, Human
    Predicted to work with: Rat, Chicken, Rhesus monkey, Bovine papillomavirus
  • Immunogen

    Synthetic peptide within Human STUB1/CHIP (C terminal). The exact sequence is proprietary. Carrier-protein conjugated.
    Database link: Q9UNE7

  • Positive control

    • WB: HEK-293T and HepG2 whole cell lysate. IHC-P: Mouse esophagus tissue; ES2 xenograft tissue. ICC/IF: HeLa cells.
  • General notes

    Previously labelled as STUB1.  



Our Abpromise guarantee covers the use of ab228742 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
IHC-P 1/100 - 1/1000.
WB 1/500 - 1/3000. Predicted molecular weight: 35 kDa.
ICC/IF 1/100 - 1/1000.


  • Function

    E3 ubiquitin-protein ligase which targets misfolded chaperone substrates towards proteasomal degradation. Ubiquitinates NOS1 in concert with Hsp70 and Hsp40. Modulates the activity of several chaperone complexes, including Hsp70, Hsc70 and Hsp90. Mediates transfer of non-canonical short ubiquitin chains to HSPA8 that have no effect on HSPA8 degradation. Mediates polyubiquitination of DNA polymerase beta (POLB) at 'Lys-41', 'Lys-61' and 'Lys-81', thereby playing a role in base-excision repair: catalyzes polyubiquitination by amplifying the HUWE1/ARF-BP1-dependent monoubiquitination and leading to POLB-degradation by the proteasome. Mediates polyubiquitination of CYP3A4.
  • Tissue specificity

    Highly expressed in skeletal muscle, heart, pancreas, brain and placenta. Detected in kidney, liver and lung.
  • Pathway

    Protein modification; protein ubiquitination.
  • Sequence similarities

    Contains 3 TPR repeats.
    Contains 1 U-box domain.
  • Domain

    The TPR domain is essential for ubiquitination mediated by UBE2D1.
  • Post-translational

    Phosphorylated upon DNA damage, probably by ATM or ATR.
    Auto-ubiquitinated; mediated by UBE2D1 and UBE2D2.
  • Cellular localization

  • Information by UniProt
  • Database links

  • Alternative names

    • Antigen NY CO 7 antibody
    • Antigen NY-CO-7 antibody
    • C terminus of Hsp70-interacting protein antibody
    • Carboxy terminus of Hsp70 interacting protein antibody
    • Carboxy terminus of Hsp70-interacting protein antibody
    • Carboxy terminus of Hsp70p interacting protein antibody
    • CHIP antibody
    • CHIP_HUMAN antibody
    • CLL associated antigen KW 8 antibody
    • CLL-associated antigen KW-8 antibody
    • E3 ubiquitin protein ligase CHIP antibody
    • E3 ubiquitin-protein ligase CHIP antibody
    • Heat shock protein A binding protein 2 (c terminal) antibody
    • HSPABP2 antibody
    • NY CO 7 antibody
    • PP1131 antibody
    • SDCCAG7 antibody
    • Serologically defined colon cancer antigen 7 antibody
    • STIP1 homology and U Box containing protein 1 antibody
    • STIP1 homology and U box containing protein 1 E3 ubiquitin protein ligase antibody
    • STIP1 homology and U box-containing protein 1 antibody
    • STUB 1 antibody
    • STUB1 antibody
    • UBOX 1 antibody
    • UBOX1 antibody
    see all


  • All lanes : Anti-STUB1/CHIP antibody (ab228742) at 1/1000 dilution

    Lane 1 : HEK-293T (human epithelial cell line from embryonic kidney transformed with large T antigen) whole cell lysate
    Lane 2 : HepG2 (human liver hepatocellular carcinoma cell line) whole cell lysate

    Lysates/proteins at 30 µg per lane.

    Predicted band size: 35 kDa

    10% SDS-PAGE gel.

  • Paraffin-embedded mouse esophagus tissue stained for STUB1/CHIP using ab228742 at 1/500 dilution in immunohistochemical analysis.

  • Paraffin-embedded ES2 xenograft tissue stained for STUB1/CHIP using ab228742 at 1/500 dilution in immunohistochemical analysis.

  • Paraformaldehyde-fixed HeLa (human epithelial cell line from cervix adenocarcinoma) cells stained for STUB1/CHIP (green) using ab228742 at 1/200 dilution in ICC/IF.

    Nuclear counterstain: DNA probe (blue).


ab228742 has not yet been referenced specifically in any publications.

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