• Product name

  • Description

    Rabbit polyclonal to TRIM21/SS-A
  • Host species

  • Tested applications

    Suitable for: IPmore details
    Unsuitable for: WB
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Chimpanzee, Gorilla
  • Immunogen

    Synthetic peptide corresponding to Human TRIM21/SS-A aa 250-300 (internal sequence).


    Database link: NP_003132.2

  • Positive control

    • HeLa cell lysate
  • General notes

    Previously labelled as TRIM21



Our Abpromise guarantee covers the use of ab91425 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
    IP: Use at 5-15µg/mg of lysate.

    Is unsuitable for WB.

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

    • Function

      E3 ubiquitin-protein ligase whose activity is dependent on E2 enzymes, UBE2D1, UBE2D2, UBE2E1 and UBE2E2. Forms a ubiquitin ligase complex in cooperation with the E2 UBE2D2 that is used not only for the ubiquitination of USP4 and IKBKB but also for its self-ubiquitination. Component of cullin-RING-based SCF (SKP1-CUL1-F-box protein) E3 ubiquitin-protein ligase complexes such as SCF(SKP2)-like complexes. A TRIM21-containing SCF(SKP2)-like complex is shown to mediate ubiquitination of CDKN1B ('Thr-187' phosphorylated-form), thereby promoting its degradation by the proteasome. Monoubiquitinates IKBKB that will negatively regulates Tax-induced NF-kappa-B signaling. Negatively regulates IFN-beta production post-pathogen recognition by polyubiquitin-mediated degradation of IRF3. Mediates the ubiquitin-mediated proteasomal degradation of IgG1 heavy chain, which is linked to the VCP-mediated ER-associated degradation (ERAD) pathway. Promotes IRF8 ubiquitination, which enhanced the ability of IRF8 to stimulate cytokine genes transcription in macrophages. Plays a role in the regulation of the cell cycle progression. Enhances the decapping activity of DCP2. Exists as a ribonucleoprotein particle present in all mammalian cells studied and composed of a single polypeptide and one of four small RNA molecules. At least two isoforms are present in nucleated and red blood cells, and tissue specific differences in RO/SSA proteins have been identified. The common feature of these proteins is their ability to bind HY RNAs.2.
    • Tissue specificity

      Isoforms 1 and 2 are expressed in fetal and adult heart and fetal lung.
    • Pathway

      Protein modification; protein ubiquitination.
    • Sequence similarities

      Belongs to the TRIM/RBCC family.
      Contains 1 B box-type zinc finger.
      Contains 1 B30.2/SPRY domain.
      Contains 1 RING-type zinc finger.
    • Domain

      The coiled-coil is necessary for the cytoplasmic localization. The B30.2/SPRY domain is necessary for the cytoplasmic localization, the interaction with IRF3 and for the IRF3-driven interferon beta promoter activity. The RING-type zinc finger is necessary for ubiquitination and for the IRF3-driven interferon beta promoter activity. Interacts with SKP2 and CUL1 in a RING finger-independent manner.
    • Post-translational

      Autoubiquitinated; does not lead to its proteasomal degradation. Deubiquitinated by USP4; leading to its stabilization.
    • Cellular localization

      Cytoplasm. Nucleus. Cytoplasm > P-body. Enters the nucleus upon exposure to nitric oxide. Localizes to small dot- or rod-like structures in the cytoplasm, called cytoplasmic bodies (P-body) that are located underneath the plasma membrane and also diffusely in the cytoplasm and are highly motil in cells. Cytoplasmic bodies are located along the microtubules and do not share the same cytoplasmic bodies with TRIM5. Colocalizes with DCP2 in P-body.
    • Information by UniProt
    • Database links

    • Alternative names

      • 52 kDa ribonucleoprotein autoantigen Ro/SS-A antibody
      • 52 kDa Ro protein antibody
      • 52kD Ro/SSA autoantigen antibody
      • Autoantigen Ro/SSA, 52-KD antibody
      • E3 ubiquitin-protein ligase TRIM21 antibody
      • RING finger protein 81 antibody
      • RNF81 antibody
      • Ro 52 antibody
      • Ro(SS-A) antibody
      • Ro52 antibody
      • RO52_HUMAN antibody
      • Sicca syndrome antigen A antibody
      • Sjoegren syndrome type A antigen antibody
      • Sjogren syndrome antigen A1 antibody
      • Sjogren syndrome type A antigen antibody
      • SS-A antibody
      • SSA antibody
      • SSA1: Sjogren syndrome antigen A1 (52kDa ribonucleoprotein autoantigen SS-A/Ro) antibody
      • TRIM21 antibody
      • Tripartite motif protein TRIM21 antibody
      • Tripartite motif-containing 21 antibody
      • Tripartite motif-containing protein 21 antibody
      see all


    ab91425 has not yet been referenced specifically in any publications.

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