Ubiquitin-like protein that plays a role in cell proliferation and sister chromatid cohesion by associating with spliceosomal proteins (PubMed:25092792). Participates thereby in pre-mRNA splicing by maintaining spliceosome integrity. Promotes the functional integrity of the Fanconi anemia DNA repair pathway by interacting with FANCI component and subsequently mediating the formation of FANCI homodimers (PubMed:25862789). Plays also a protective role against ER stress-induced apoptosis (PubMed:37315790).
