E3 ubiquitin-protein ligase that plays a key role in innate antiviral immunity by mediating ubiquitination of CGAS and STING1. In response to pathogen- and host-derived double-stranded DNA (dsDNA), targets STING1 to 'Lys-63'-linked ubiquitination, thereby promoting its homodimerization, a step required for the production of type I interferon IFN-beta (By similarity). Also mediate monoubiquitination of CGAS, thereby promoting CGAS oligomerization and subsequent activation. Promotes also TNFalpha-induced NF-kappa-B signaling by mediating 'Lys-63'-linked ubiquitination TAK1, leading to enhanced interaction between TAK1 and CHUK/IKKalpha Independently of its E3 ubiquitin ligase activity, positive regulator of TLR3 signaling. Potentiates extracellular double stranded RNA (dsRNA)-induced expression of IFNB1 and interferon-stimulated genes ISG15, IFIT1/ISG56, CXCL10, OASL and CCL5/RANTES. Promotes establishment of an antiviral state by TLR3 ligand and TLR3-mediated chemokine induction following infection by hepatitis C virus. Acts as restriction factor of Zika virus through direct interaction with the viral RNA via its C-terminal region.
Background References
1. Yang X. 2022. TRIM56 promotes malignant progression of glioblastoma by stabilizing cIAP1 protein. J Exp Clin Cancer Res.41(1):336.
2. Chen Y. 2018. TRIM56 Suppresses Multiple Myeloma Progression by Activating TLR3/TRIF Signaling. Yonsei Med J. 59(1):43-50.
Western blot analysis of TRIM56 on different lysates with Rabbit anti-TRIM56 antibody (HA721776) at 1/1,000 dilution.
Lane 1: HeLa cell lysate Lane 2: MCF7 cell lysate Lane 3: A549 cell lysate Lane 4: 293T cell lysate Lane 5: A375 cell lysate Lane 6: COS-1 cell lysate Lane 7: C2C12 cell lysate Lane 8: PC-12 cell lysate Lane 9: Mouse lung tissue lysate
Lysates/proteins at 30 µg/Lane.
Predicted band size: 81 kDa Observed band size: 81 kDa
Exposure time: 3 minutes 54 seconds;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721776) at 1/1,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
☑ Knockdown (KD)
Western blot analysis of TRIM56 on different lysates with Rabbit anti-TRIM56 antibody (HA721776) at 1/1,000 dilution.
Lane 1: A549-si NT cell lysate (20 µg/Lane) Lane 2: A549-si TRIM56 cell lysate (20 µg/Lane)
Predicted band size: 81 kDa Observed band size: 81 kDa
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA721776) at 1/1,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
Flow cytometric analysis of HeLa cells labeling TRIM56.
Cells were fixed and permeabilized. Then stained with the primary antibody (HA721776, 1/1,000) (red) compared with Rabbit IgG Isotype Control (green). After incubation of the primary antibody at +4℃ for an hour, the cells were stained with a iFluor™ 488 conjugate-Goat anti-Rabbit IgG Secondary antibody (HA1121) at 1/1,000 dilution for 30 minutes at +4℃. Unlabelled sample was used as a control (cells without incubation with primary antibody; black).
Flow cytometric analysis of NIH/3T3 cells labeling TRIM56.
Cells were fixed and permeabilized. Then stained with the primary antibody (HA721776, 1/1,000) (red) compared with Rabbit IgG Isotype Control (green). After incubation of the primary antibody at +4℃ for an hour, the cells were stained with a iFluor™ 488 conjugate-Goat anti-Rabbit IgG Secondary antibody (HA1121) at 1/1,000 dilution for 30 minutes at +4℃. Unlabelled sample was used as a control (cells without incubation with primary antibody; black).
Flow cytometric analysis of C2C12 cells labeling TRIM56.
Cells were fixed and permeabilized. Then stained with the primary antibody (HA721776, 1/1,000) (red) compared with Rabbit IgG Isotype Control (green). After incubation of the primary antibody at +4℃ for an hour, the cells were stained with a iFluor™ 488 conjugate-Goat anti-Rabbit IgG Secondary antibody (HA1121) at 1/1,000 dilution for 30 minutes at +4℃. Unlabelled sample was used as a control (cells without incubation with primary antibody; black).
Flow cytometric analysis of PC-12 cells labeling TRIM56.
Cells were fixed and permeabilized. Then stained with the primary antibody (HA721776, 1/1,000) (red) compared with Rabbit IgG Isotype Control (green). After incubation of the primary antibody at +4℃ for an hour, the cells were stained with a iFluor™ 488 conjugate-Goat anti-Rabbit IgG Secondary antibody (HA1121) at 1/1,000 dilution for 30 minutes at +4℃. Unlabelled sample was used as a control (cells without incubation with primary antibody; black).
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