Tripartite motif-containing protein 72

UniProtKB accession:  Q1XH17

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UniProtKB description:  Muscle-specific E3 ubiquitin-protein ligase that plays a central role in cell membrane repair by nucleating the assembly of the repair machinery at injury sites (PubMed:19043407, PubMed:37770719). Its ubiquitination activity is mediated by E2 ubiquitin-conjugating enzymes UBE2D1, UBE2D2 and UBE2D3 (PubMed:37770719). Acts as a sensor of oxidation: upon membrane damage, entry of extracellular oxidative environment results in disulfide bond formation and homooligomerization at the injury site (PubMed:19043407, PubMed:19202355). This oligomerization acts as a nucleation site for recruitment of TRIM72-containing vesicles to the injury site, leading to membrane patch formation (PubMed:19043407). Probably acts upstream of the Ca(2+)-dependent membrane resealing process (PubMed:19043407). Required for transport of DYSF to sites of cell injury during repair patch formation (PubMed:19043407). Regulates membrane budding and exocytosis (PubMed:19029292). May be involved in the regulation of the mobility of KCNB1-containing endocytic vesicles (PubMed:19202355).