Technical Data
S6600-65D
SSA1 (Tripartite Motif-containing 21, 52kD Ribonucleoprotein Autoantigen Ro/SS-A, 52kD Ro Protein, RING Finger Protein 81, RNF81, Ro(SS-A), RO52, Sjoegren Syndrome Type A Antigen, SSA, SS-A, TRIM21, Tripartite Motif-containing Protein 21)
Description:
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.

Applications:
Suitable for use in ELISA and Western Blot. Other applications not tested.

Recommended Dilution:
ELISA: 1:16,000
Western Blot: 0.2-1ug/ml
Optimal dilutions to be determined by the researcher.

Storage and Stability:
May be stored at 4C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
TypeIsotypeCloneGrade
PabAffinity Purified
SizeStorageShippingSourceHost
100ug-20CBlue IceHumanGoat
Concentration:
~0.5mg/ml
Immunogen:
Synthetic peptide corresponding to CPLNIGSQGSTDY, from human TRIM21, at C-terminal (NP_003132.2).
Purity:
Purified by immunoaffinity chromatography.
Form
Supplied as a liquid in Tris saline, 0.02% sodium azide, pH 7.3, 0.5% BSA.
Specificity:
Recognizes human TRIM21.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.
1. Chan EK, Di Donato F, Hamel JC, Tseng CE, Buyon JP. 52-kD SS-A/Ro: genomic structure and identification of an alternatively spliced transcript encoding a novel leucine zipper-minus autoantigen expressed in fetal and adult heart.J Exp Med. 1995 Oct 1;182(4):983-92.