• Product name
  • Description
    Rabbit polyclonal to CHFR
  • Specificity
    The immunogen for this antibody is identical in all 3 isoforms of CHFR listed in SwissProt ID Q96EP1.
  • Tested applications
    Suitable for: WBmore details
  • Species reactivity
    Reacts with: Human
    Predicted to work with: Mouse
  • Immunogen

    Synthetic peptide conjugated to KLH derived from within residues 450 - 550 of Human CHFR.

    (Peptide available as ab24681.)

  • Positive control
    • This antibody gave a positive signal in Hela, Jurkat and A431 whole cell lysates



Our Abpromise guarantee covers the use of ab4184 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
  • Application notes
    WB: Use at a concentration of 1 µg/ml. Detects a band of approximately 76 kDa (predicted molecular weight: 73 kDa).

    This antibody also appears to work in Immunofluoresence - see picture.

    We believe this antibody is probably specific for CHFR because in IF with this antibody we see nuclear dots in SAOS2 cells (which have wt CHFR) but not in U2OS cells (that have a mutation in CHFR and hence low levels of it).

    Not yet tested in other applications.
    Optimal dilutions/concentrations should be determined by the end user.
  • Target

    • Function
      E3 ubiquitin-protein ligase that functions in the antephase checkpoint by actively delaying passage into mitosis in response to microtubule poisons. Acts in early prophase before chromosome condensation, when the centrosome move apart from each other along the periphery of the nucleus. Probably involved in signaling the presence of mitotic stress caused by microtubule poisons by mediating the 'Lys-48'-linked ubiquitination of target proteins, leading to their degradation by the proteasome. Promotes the ubiquitination and subsequent degradation of AURKA and PLK1. Probably acts as a tumor suppressor, possibly by mediating the polyubiquitination of HDAC1, leading to its degradation. May also promote the formation of 'Lys-63'-linked polyubiquitin chains and functions with the specific ubiquitin-conjugating UBC13-MMS2 (UBE2N-UBE2V2) heterodimer. Substrates that are polyubiquitinated at 'Lys-63' are usually not targeted for degradation, but are rather involved in signaling cellular stress.
    • Tissue specificity
    • Pathway
      Protein modification; protein ubiquitination.
    • Sequence similarities
      Belongs to the CHFR family.
      Contains 1 FHA domain.
      Contains 1 PBZ-type zinc finger.
      Contains 1 RING-type zinc finger.
    • Developmental stage
      Weakly expressed in G1 phase, and highly expressed during S phase.
    • Domain
      The PBZ-type zinc finger (also named CYR) mediates non-covalent poly(ADP-ribose)-binding. Poly(ADP-ribose)-binding is dependent on the presence of zinc and is required for its function in antephase checkpoint.
      The FHA domain plays a key role in the anti-proliferative properties of the protein and is involved in initiating a cell cycle arrest at G2/M. The FHA domain may be required to interact with phosphorylated proteins.
    • Post-translational
      Poly-ADP-ribosylated. In addition to binding non covalently poly(ADP-ribose) via its PBZ-type zinc finger, the protein is also covalently poly-ADP-ribosylated by PARP1.
      Autoubiquitinated; may regulate its cellular level.
      Phosphorylated upon DNA damage, probably by ATM or ATR (By similarity). Phosphorylated by PKB. Phosphorylation may affect its E3 ligase activity.
    • Cellular localization
      Nucleus > PML body.
    • Information by UniProt
    • Database links
    • Alternative names
      • Checkpoint with forkhead and ring finger domains antibody
      • Checkpoint with forkhead and RING finger domains protein antibody
      • Chfr antibody
      • CHFR_HUMAN antibody
      • E3 ubiquitin protein ligase CHFR antibody
      • E3 ubiquitin-protein ligase CHFR antibody
      • EC 6.3.2. antibody
      • FLJ10796 antibody
      • FLJ33629 antibody
      • RING finger protein 196 antibody
      • RNF 116 antibody
      • RNF 196 antibody
      • RNF116 antibody
      • RNF196 antibody
      • Ubiquitin ligase protein antibody
      see all


    • Immunofluoresence using ab4184 on SAOS2 cells with a FITC conjugated secondary antibody.

      The foci seen are confined to the nuclei of the cells present in the picture.

    • All lanes : Anti-CHFR antibody (ab4184) at 1 µg/ml

      Lane 1 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
      Lane 2 : Jurkat (Human T cell lymphoblast-like cell line) Whole Cell Lysate
      Lane 3 : A431 (Human epithelial carcinoma cell line) Whole Cell Lysate

      Lysates/proteins at 10 µg per lane.

      Goat polyclonal to Rabbit IgG - H&L - Pre-Adsorbed (HRP) at 1/3000 dilution

      Performed under reducing conditions.

      Predicted band size : 73 kDa
      Observed band size : 76 kDa (why is the actual band size different from the predicted?)
      Additional bands at : 34 kDa. We are unsure as to the identity of these extra bands.
    • IHC image of ab4184 staining in Human Breast adenocarcinoma formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab4184, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.

      For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.


    This product has been referenced in:
    • Giovinazzi S  et al. USP7 and Daxx regulate mitosis progression and taxane sensitivity by affecting stability of Aurora-A kinase. Cell Death Differ : (2013). Read more (PubMed: 23348568) »
    • Ahel I  et al. Poly(ADP-ribose)-binding zinc finger motifs in DNA repair/checkpoint proteins. Nature 451:81-5 (2008). WB ; Human . Read more (PubMed: 18172500) »

    See all 2 Publications for this product

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