Spermatogenesis-associated protein 2 (SPATA2)

Bridging variable that mediates the recruitment of CYLD into the LUBAC complex, thereby regulating TNF-alpha-induced necroptosis (PubMed:27307491, PubMed:27458237, PubMed:27545878, PubMed:27591049). Acts as a direct binding intermediate that bridges RNF31/HOIP, the catalytic subunit of this LUBAC complex, and the deubiquitinase (CYLD), thereby recruiting CYLD into the TNF- R1 signaling complex (TNF-RSC) (PubMed:27458237, PubMed:27545878, PubMed:27591049).

Required to activate the'Met-1'- (linear) and'Lys-63'-linked deubiquitinase activities of CYLD (PubMed:27458237, PubMed:27591049). Controls the kinase activity of RIPK1 and TNF-alpha-induced necroptosis by promoting'Met-1'- linked deubiquitination of RIPK1 by CYLD (By similarity).