RNF167
Function
E3 ubiquitin-protein ligase that acts as a regulator of the TORC1 signaling pathway (PubMed:33594058, PubMed:35114100). Positively regulates the TORC1 signaling pathway independently of arginine levels: acts by catalyzing 'Lys-29'-polyubiquitination and degradation of CASTOR1, releasing the GATOR2 complex from CASTOR1 (PubMed:33594058). Also negatively regulates the TORC1 signaling pathway in response to leucine deprivation: acts by mediating 'Lys-63'-linked polyubiquitination of SESN2, promoting SESN2-interaction with the GATOR2 complex (PubMed:35114100). Also involved in protein trafficking and localization (PubMed:23129617, PubMed:23353890, PubMed:24387786, PubMed:27808481, PubMed:32409562). Acts as a regulator of synaptic transmission by mediating ubiquitination and degradation of AMPAR receptor GluA2/GRIA2 (PubMed:23129617, PubMed:33650289). Does not catalyze ubiquitination of GluA1/GRIA1 (PubMed:23129617). Also acts as a regulator of the recycling endosome pathway by mediating ubiquitination of VAMP3 (PubMed:23353890). Regulates lysosome positioning by catalyzing ubiquitination and degradation of ARL8B (PubMed:27808481). Plays a role in growth regulation involved in G1/S transition by mediating, possibly by mediating ubiquitination of SLC22A18 (PubMed:16314844). Acts with a limited set of E2 enzymes, such as UBE2D1 and UBE2N (PubMed:33650289).
Pathway
Protein modification; protein ubiquitination.
Post-translational modifications
Autoubiquitinated in vitro in the presence of UBE2D1 and UBE2E1.
Sequence Similarities
Belongs to the Godzilla family.
Tissue Specificity
Widely expressed (PubMed:23129617). Strongly expressed in the kidney, pancreas, testis and liver (at protein level) (PubMed:16314844, PubMed:23129617).
Cellular localization
- Lysosome membrane
- Single-pass type I membrane protein
- Endosome membrane
- Single-pass type I membrane protein
- Endomembrane system
- Single-pass membrane protein
- Cell membrane
- Single-pass type I membrane protein
- Targeted to cytoplasmic membranes; mainly localizes to lysosomal membrane (PubMed:16314844, PubMed:23129617). A subpopulation localizes to the cell membrane of neurons (PubMed:23129617).
- Isoform 1
- Lysosome membrane
- Single-pass type I membrane protein
- Isoform 2
- Cytoplasm
- Cytosol
Alternative names
RING105, LP2254, RNF167, E3 ubiquitin-protein ligase RNF167, RING finger protein 167