Function:E3 ubiquitin-protein ligase which accepts ubiquitin from an E2 ubiquitin-conjugating enzyme in the form of a thioester and then directly transfers the ubiquitin to targeted substrates. Regulates the transcriptional activity of several transcription factors , and probably plays an important role in the regulation of immune response. ,pathway:Protein modification; protein ubiquitination. ,PTM:Phosphorylated on tyrosine residues. ,similarity:Contains 1 C2 domain. ,similarity:Contains 1 HECT (E6AP-type E3 ubiquitin-protein ligase) domain. ,similarity:Contains 4 WW domains. ,subunit:Interacts via its WW domains with DRPLA , NFE2 and CBLC. Interacts with Epstein-Barr virus LMP2A. Interacts with NOTCH1 , OCLN , JUN and JUNB. Interacts with NDFIP1 in vitro (By similarity) . Interacts with ARHGEF7. ,tissue specificity:Widely expressed. ,
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