ZSWIM8
Function
Substrate recognition component of a SCF-like E3 ubiquitin-protein ligase complex that promotes target-directed microRNA degradation (TDMD), a process that mediates degradation of microRNAs (miRNAs) (PubMed:33184234, PubMed:33184237). The SCF-like E3 ubiquitin-protein ligase complex acts by catalyzing ubiquitination and subsequent degradation of AGO proteins (AGO1, AGO2, AGO3 and/or AGO4), thereby exposing miRNAs for degradation (PubMed:33184234, PubMed:33184237). Specifically recognizes and binds AGO proteins when they are engaged with a TDMD target (PubMed:33184234). May also act as a regulator of axon guidance: specifically recognizes misfolded ROBO3 and promotes its ubiquitination and subsequent degradation (PubMed:24012004). Plays an essential role for proper embryonic development of heart and lung (By similarity). Controls protein quality of DAB1, a key signal molecule for brain development, thus protecting its signaling strength. Mechanistically, recognizes intrinsically disordered regions of DAB1 and eliminates misfolded DAB1 that cannot be properly phosphorylated (By similarity).
(Microbial infection) Participates in Zika virus inhibition of IFN signaling by acting as a scaffold protein to connect ZSWIM8/CUL3 ligase complex and STAT2, leading to STAT2 degradation.
Pathway
Protein modification; protein ubiquitination.
Sequence Similarities
Belongs to the ZSWIM8 family.
Cellular localization
- Cytoplasm
- Cytosol
- Translocates together with its substrate into stress granules (SGs) under proteostatic stress.
Alternative names
KIAA0913, ZSWIM8, Zinc finger SWIM domain-containing protein 8