Deubiquitinating enzymes (DUBs) remove ubiquitin (Ub) from Ub-conjugated substrates to regulate the functional outcome of ubiquitination. This entry includes MINDY-3/4. They belong to the MINDY (motif interacting with Ub-containing novel DUB) family (peptidase family C121), whose members are deubiquitinating enzymes releasing Lys48-linked ubiquitin [1]. This is a conserved domain found in deubiquitinating enzymes, MINDY-3 and MINDY-4.

1: MINDY-1 Is a Member of an Evolutionarily Conserved and Structurally Distinct New Family of Deubiquitinating Enzymes. Abdul Rehman SA, Kristariyanto YA, Choi SY, Nkosi PJ, Weidlich S, Labib K, Hofmann K, Kulathu Y; Mol Cell. 2016;63:146-155. PMID:27292798