UV radiation resistance-associated gene protein - Q9P2Y5 (UVRAG_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

 
Function
Versatile protein that is involved in regulation of different cellular pathways implicated in membrane trafficking. Involved in regulation of the COPI-dependent retrograde transport from Golgi and the endoplasmic reticulum by associating with the NRZ complex; the function is dependent on its binding to phosphatidylinositol 3-phosphate (PtdIns(3)P) (PubMed:16799551, PubMed:18552835, PubMed:20643123, PubMed:24056303, PubMed:28306502). During autophagy acts as regulatory subunit of the alternative PI3K complex II (PI3KC3-C2) that mediates formation of phosphatidylinositol 3-phosphate and is believed to be involved in maturation of autophagosomes and endocytosis. Activates lipid kinase activity of PIK3C3 (PubMed:16799551, PubMed:20643123, PubMed:24056303, PubMed:28306502). Involved in the regulation of degradative endocytic trafficking and cytokinesis, and in regulation of ATG9A transport from the Golgi to the autophagosome; the functions seems to implicate its association with PI3KC3-C2 (PubMed:16799551, PubMed:20643123, PubMed:24056303). Involved in maturation of autophagosomes and degradative endocytic trafficking independently of BECN1 but depending on its association with a class C Vps complex (possibly the HOPS complex); the association is also proposed to promote autophagosome recruitment and activation of Rab7 and endosome-endosome fusion events (PubMed:18552835, PubMed:28306502). Enhances class C Vps complex (possibly HOPS complex) association with a SNARE complex and promotes fusogenic SNARE complex formation during late endocytic membrane fusion (PubMed:24550300). In case of negative-strand RNA virus infection is required for efficient virus entry, promotes endocytic transport of virions and is implicated in a VAMP8-specific fusogenic SNARE complex assembly (PubMed:24550300). UniProt
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Subunit Structure
Component of the PI3K (PI3KC3/PI3K-III/class III phosphatidylinositol 3-kinase) complex II (PI3KC3-C2) in which the core composed of the catalytic subunit PIK3C3, the regulatory subunit PIK3R4 and BECN1 is associated with UVRAG; in the complex interacts directly with BECN1. PI3KC3-C2 can associate with further regulatory subunits such as RUBCN and probably SH3GLB1/Bif-1 (PubMed:16799551, PubMed:18843052, PubMed:19050071, PubMed:19270696, PubMed:20643123, PubMed:23878393, PubMed:24056303). Interacts with SH3GLB1; UVRAG bridges the interaction to BECN1 indicative for an association with the PI3K complex PI3KC3-C2 (PubMed:17891140). Interacts with RINT1. Associates with the NRZ complex under basal conditions and dissociates from it under autophagy conditions to associate with the PI3K complex; these complex associations seem to be mutually exclusive (PubMed:24056303). Interacts with VPS16; VPS11; VPS18; VPS33 (VPS33A or VPS33B) and VPS39; indicative for an association with a class C Vps tethering complex (possibly the HOPS complex) (PubMed:18552835, PubMed:25533187). Interacts with RAB7A; RAB7A competes with UVRAG for RUBCN binding (PubMed:25533187, PubMed:20974968). Interacts with STX7, VTI1B, STX8 (PubMed:24550300). Interacts with PRKDC, XRCC6 and XRCC5; indicative for an association with the DNA-dependent protein kinase complex DNA-PK. Interacts with CEP63 (PubMed:22542840). Directly interacts with FEZ1 and SCOC; the interaction with SCOC is reduced by amino acid starvation, but the complex is stabilized in the presence of FEZ1 (PubMed:22354037). Interacts with BECN1P1/BECN2 (PubMed:23954414). Interacts with SLAMF1 (PubMed:22493499). Interacts with RUBCNL/PACER; promoting targeting of UVRAG to autophagosome (PubMed:28306502). UniProt
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Data in green originates from UniProtKB  
Variation data (sourced from UniProt) shows non-genetic variation from the ExPASy   and dbSNP   websites.
Data in yellow originates from Pfam  , by interacting with the HMMER3 web site  
Data in purple originates from Phosphosite  .
Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
Data in grey has been calculated using BioJava  . Protein disorder predictions are based on JRONN (Troshin, P. and Barton, G. J. unpublished), a Java implementation of RONN  
  • Red: potentially disorderd region
  • Blue: probably ordered region.
Hydropathy has been calculated using a sliding window of 15 residues and summing up scores from standard hydrophobicity tables.
  • Red: hydrophobic
  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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Data in red indicates combined ranges of Homology Models from the SWISS-MODEL Repository  
The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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