Description_x000D_ General description_x000D_ Ataxin3 (ATXN3) is encoded by the gene mapped to human chromosome 14q32. The encoded protein is characterized with a ubiquitin interaction motif (UIM) domain involved in binding mono and/or polyubiquitylated proteins._x000D_ Application_x000D_ Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling._x000D_ Biochem/physiol Actions_x000D_ Ataxin3 (ATXN3) is a polyglutamine neurodegenerative disease protein involved in the ubiquitin-proteasome pathway. ATXN3 performs all the functions same as ubiquitin proteases such as, reducing polyubiquitylation of 125I-lysozyme by removing ubiquitin from polyubiquitin chains, cleaving a ubiquitin protease substrate and binding the specific ubiquitin protease inhibitor, ubiquitin-aldehyde. Mutation in the gene has been observed in spinocerebellar ataxia type 3 patients.