<unk> (ligase) has been shown to interact with: * Alpha-synuclein, * CASK, * CUL1, * FBXW7 and * GPR37, * HSPA1A, * HSPA8, * Multisynthetase complex auxiliary component p38, * PDCD2, * SEPT5, * SNCAIP, * STUB1, * SYT11, and * Ubiquitin C.
Parkin 
Peripherin
CEPP
Tetraspanin
Dystrophin
Alpha-synuclein
Huntingtin-interacting protein 1
MSin3 interaction domain