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. Mediates PAX6 ubiquitination leading to proteasomal degradation, thereby modulating cortical neurogenesis. May also inhibit PAX6 transcriptional activity, possibly in part by preventing the binding of PAX6 to its consensus sequences. May contribute to the regulation of the intracellular level of HN (humanin) or HN-containing proteins through the proteasomal degradation pathway. Mediates MED15 ubiquitination leading to proteasomal degradation. May contribute to the innate restriction of retroviruses. Upon overexpression, reduces HISLV1 and murine leukemia virus infectivity, by suppressing viral gene expression. Antiviral activity depends on a functional E3 ubiquitin-protein ligase domain. 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.
Function:
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. Mediates PAX6 ubiquitination leading to proteasomal degradation, thereby modulating cortical neurogenesis. May also inhibit PAX6 transcriptional activity, possibly in part by preventing the binding of PAX6 to its consensus sequences. May contribute to the regulation of the intracellular level of HN (humanin) or HN-containing proteins through the proteasomal degradation pathway. Mediates MED15 ubiquitination leading to proteasomal degradation. May contribute to the innate restriction of retroviruses. Upon overexpression, reduces HISLV1 and murine leukemia virus infectivity, by suppressing viral gene expression. Antiviral activity depends on a functional E3 ubiquitin-protein ligase domain. 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.
Subunit:
Binds cytoplasmic tail of integrin alpha-1. Interacts with the HN peptide (By similarity). Interacts with PHOX2B (By similarity). Interacts with PAX6 (By similarity). Interacts with MED15/ARC105; this interaction leads to MED15 ubiquitination and proteasomal degradation.
Subcellular Location:
Cytoplasm. Nucleus.
Tissue Specificity:
Ubiquitous.
Similarity:
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.
SWISS:
Q96F44
Gene ID:
81559
Database links:
Entrez Gene: 81559 Human
Entrez Gene: 338364 Mouse
Entrez Gene: 94091 Mouse
Entrez Gene: 72534 Rat
Omim: 607868 Human
SwissProt: Q96F44 Human
SwissProt: Q99PQ2 Mouse
SwissProt: B1H278 Rat
Unigene: 13543 Human
Unigene: 49649 Mouse
Unigene: 439976 Mouse
Unigene: 9308 Rat
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