The DUSP (domain present in ubiquitin-specific protease) domain is found at the N-terminus of Ubiquitin-specific proteases. The structure of this domain has been solved [1]. Its tripod-like structure consists of a 3-fold alpha-helical bundle supporting a triple-stranded anti-parallel beta-sheet [1].

1: Solution structure of the human ubiquitin-specific protease 15 DUSP domain. de Jong RN, Ab E, Diercks T, Truffault V, Daniels M, Kaptein R, Folkers GE; J Biol Chem. 2006;281:5026-5031. PMID:16298993