E3 ubiquitin-protein ligase RAD18 - Q9NS91 (RAD18_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for Q9NS91: 5
 
Function
E3 ubiquitin-protein ligase involved in postreplication repair of UV-damaged DNA. Postreplication repair functions in gap-filling of a daughter strand on replication of damaged DNA. Associates to the E2 ubiquitin conjugating enzyme UBE2B to form the UBE2B-RAD18 ubiquitin ligase complex involved in mono-ubiquitination of DNA-associated PCNA on 'Lys-164'. Has ssDNA binding activity. UniProt
Catalytic Activity
S-ubiquitinyl-[E2 ubiquitin-conjugating enzyme]-L-cysteine + [acceptor protein]-L-lysine = [E2 ubiquitin-conjugating enzyme]-L-cysteine + N6-ubiquitinyl-[acceptor protein]-L-lysine. UniProt
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Subunit Structure
Homodimer (PubMed:21549715). Interacts with UBE2A and UBE2B, one homodimer binding one molecule of UBE2B. Interacts with SHPRH (PubMed:17130289, PubMed:17108083). Interacts with HLTF (PubMed:18316726, PubMed:18719106). Interacts with SPRTN; leading to enhance chromatin association of RAD18 and RAD18-mediated PCNA ubiquitination and translesion DNA synthesis (PubMed:22681887). Interacts (via C-terminus and phosphorylated form) with SLF1 (via BRCT domains); this interaction is required for efficient repair of UV-induced DNA damage (PubMed:15632077, PubMed:22036607, PubMed:25931565). Interacts with SLF2 (PubMed:25931565). Interacts with SMC5; this interaction is increased in a SLF1 or SLF2-dependent manner (PubMed:25931565). UniProt
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Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
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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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