This gene encodes a member of an evolutionarily conserved family of proteins that may function as methyltransferases. This gene is located in a larger region of chromosome 7 that is deleted in Williams-Beuren syndrome, a multisystem developmental disorder. There are two pseudogenes for this gene located in the same region of chromosome 7. Alternative splicing results in multiple transcript variants encoding different isoforms.,NSUN5,NOL1,NOL1R,NSUN5A,WBSCR20,WBSCR20A,p120,p120(NOL1),Epigenetics & Nuclear Signaling,RNA Binding,Signal Transduction,Endocrine & Metabolism,NSUN5