The function of ENSG00000143409 (MINDY1, MINDY lysine 48 deubiquitinase 1) is as follows. Hydrolase that can specifically remove 'Lys-48'-linked conjugated ubiquitin from proteins. Has exodeubiquitinase activity and has a preference for long polyubiquitin chains. May play a regulatory role at the level of protein turnover. {ECO:0000269|PubMed:27292798, ECO:0000269|PubMed:28082312}.