NICE4, also known as UBAP2L (Ubiquitin-associated protein 2-like) orKIAA0144, is a 1,087 amino acid protein that is ubiquitously expressed. Phosphorylated upon DNA damage, NICE4 contains one UBA domain and is expressed as 4 isoforms produced by alternative splicing events. The gene that encodes NICE4 maps to human chromosome 1.