DNA-binding protein that binds to both single- and double-stranded DNA. Binds preferentially to UV-damaged DNA in vitro (PubMed:22367945). May be involved in DNA-metabolic processes (PubMed:23349438). Closely coexpressed with replication factor A (RF-A), the cohesion complex and the DNA polymerases alpha, delta and epsilon. Present with 3810 molecules/cell in log phase SD medium. Belongs to the WD repeat DDB2/WDR76 family.