Technical Data
SSA1, CT (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)
TRIM21 (Tripartite motif-containing protein 21; also Ro(SS-A), 52kD Ro Protein/Ro52, and RING finger protein 81) is a 52-56kD member of the RING finger-B-box-coiled-coil family of proteins. It is an E3 ligase that is found in both nucleus and cytoplasm, where it is often associated with microtubules. TRIM21 ubiquitinates select proteins. In B cells, it targets the Fc fragment of misfolded IgG, providing QC on its production. In macrophages, it acts in a nondegradative manner on IRF8, promoting innate immunity. Human TRIM21 is 475aa in length and contains one E3 ligase RING finger domain (aa16-55), a B-Box type zinc-finger region (aa92-123), a coiled-coil region (aa128-238) and a C-terminal PRY/B30.2 Ig binding domain (aa268-465). TRIM21 is reported to form trimers. Over aa195-293, human TRIM21 exhibits 72aa identity with mouse TRIM21.

Suitable for use in ELISA and Immunohistochemistry. Other applications not tested.

Recommended Dilution:
ELISA: 1:32,000
Immunohistochemistry (Formalin fixed paraffin embedded): 5ug/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.
PabIgGAffinity Purified
50ug-20CBlue IceHumanGoat
Synthetic peptide corresponding to CPLNIGSQGSTDY from the C-terminal of human TRIM21.
Purified by immunoaffinity chromatography.
Supplied as a liquid in TBS, pH 7.3, 0.5% BSA, 0.02% sodium azide.
Recognizes human TRIM21.
Intended for research use only. Not for use in human, therapeutic, or diagnostic applications.