RPN7 (known as the non ATPase regulatory subunit 6 in higher eukaryotes) is one of the lid subunits of the 26S proteasome and has been shown in Saccharomyces cerevisiae to be required for structural integrity [1]. The 26S proteasome is is involved in the ATP-dependent degradation of ubiquitinated proteins.

1: Rpn7 Is required for the structural integrity of the 26 S proteasome of Saccharomyces cerevisiae. Isono E, Saeki Y, Yokosawa H, Toh-e A; J Biol Chem. 2004;279:27168-27176. PMID:15102831