7qs1

Structural highlights

Function

TRI11_HUMAN E3 ubiquitin-protein ligase that promotes the degradation of insoluble ubiquitinated proteins, including insoluble PAX6, poly-Gln repeat expanded HTT and poly-Ala repeat expanded ARX (By similarity). Mediates PAX6 ubiquitination leading to proteasomal degradation, thereby modulating cortical neurogenesis (By similarity). May also inhibit PAX6 transcriptional activity, possibly in part by preventing the binding of PAX6 to its consensus sequences (By similarity). May contribute to the regulation of the intracellular level of HN (humanin) or HN-containing proteins through the proteasomal degradation pathway (By similarity). Mediates MED15 ubiquitination leading to proteasomal degradation (PubMed:16904669). May contribute to the innate restriction of retroviruses (PubMed:18248090). Upon overexpression, reduces HIV-1 and murine leukemia virus infectivity, by suppressing viral gene expression (PubMed:18248090). Antiviral activity depends on a functional E3 ubiquitin-protein ligase domain (PubMed:18248090). May regulate TRIM5 turnover via the proteasome pathway, thus counteracting the TRIM5-mediated cross-species restriction of retroviral infection at early stages of the retroviral life cycle (PubMed:18248090). Acts as an inhibitor of the AIM2 inflammasome by promoting autophagy-dependent degradation of AIM2 (PubMed:27498865). Mechanistically, undergoes autoubiquitination upon DNA stimulation, promoting interaction with AIM2 and SQSTM1/p62, leading to AIM2 recruitment to autophagosomes (PubMed:27498865).[UniProtKB:Q99PQ2]^{[1] [2] [3]}

See Also

• Ubiquitin protein ligase 3D structures

References

1. ↑ Ishikawa H, Tachikawa H, Miura Y, Takahashi N. TRIM11 binds to and destabilizes a key component of the activator-mediated cofactor complex (ARC105) through the ubiquitin-proteasome system. FEBS Lett. 2006 Sep 4;580(20):4784-92. PMID:16904669 doi:10.1016/j.febslet.2006.07.066
2. ↑ Uchil PD, Quinlan BD, Chan WT, Luna JM, Mothes W. TRIM E3 ligases interfere with early and late stages of the retroviral life cycle. PLoS Pathog. 2008 Feb 8;4(2):e16. PMID:18248090 doi:10.1371/journal.ppat.0040016
3. ↑ Liu T, Tang Q, Liu K, Xie W, Liu X, Wang H, Wang RF, Cui J. TRIM11 Suppresses AIM2 Inflammasome by Degrading AIM2 via p62-Dependent Selective Autophagy. Cell Rep. 2016 Aug 16;16(7):1988-2002. PMID:27498865 doi:10.1016/j.celrep.2016.07.019