2nbw is a 2 chain structure with sequence from Saccharomyces cerevisiae S288C. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
↑ Glickman MH, Rubin DM, Fried VA, Finley D. The regulatory particle of the Saccharomyces cerevisiae proteasome. Mol Cell Biol. 1998 Jun;18(6):3149-62. PMID:9584156