The function of XAB2 (XPA binding protein 2, ENSG00000076924) is as follows. Involved in pre-mRNA splicing as component of the spliceosome (PubMed:11991638, PubMed:28076346, PubMed:28502770). Involved in transcription-coupled repair (TCR), transcription and pre-mRNA splicing (PubMed:10944529, PubMed:17981804). {ECO:0000269|PubMed:10944529, ECO:0000269|PubMed:11991638, ECO:0000269|PubMed:17981804, ECO:0000269|PubMed:28076346, ECO:0000269|PubMed:28502770}.