The function of ELOF1 (elongation factor 1, ENSG00000130165) is as follows. Factor involved in transcription-coupled nucleotide excision repair (TC-NER), a mechanism that rapidly removes RNA polymerase II- blocking lesions from the transcribed strand of active genes (PubMed:34108662, PubMed:34108663, PubMed:38316879). Acts as a key adapter required to anchor TC-NER factors to RNA polymerase II: stably positions UVSSA and the DCX(ERCC8) complex (also named CSA complex) on arrested RNA polymerase II, leading to neddylation and activation of the DCX(ERCC8) complex and ubiquitination of RNA polymerase II (PubMed:38316879). {ECO:0000269|PubMed:34108662, ECO:0000269|PubMed:34108663, ECO:0000269|PubMed:38316879}.