Functional Aspects:Ubiquitin is a highly conserved polypeptide widely found in eukaryotic cells. It functions in an ATP-dependent manner to help degrade non lysosomal intracellular protein. By covalently binding to the protein, ubiquitin appears to identify the protein for disposal by proteases. It may also play a role in regulation of gene expression. This antibody will help detect ubiquitin in normal and uncharacterized tissues.