General Structure Information 1avo PSME1 proteasome activator reg(alpha) 2.8Å AUTH J.R.KNOWLTON,S.C.JOHNSTON,F.G.WHITBY,C.REALINI,AUTH 2 Z.ZHANG,M.RECHSTEINER,C.P.HILLTITL STRUCTURE OF THE PROTEASOME ACTIVATOR REGALPHATITL 2 (PA28ALPHA).REF NATURE V. 390 639 1997REFN ISSN 0028-0836PMID 9403698DOI 10.1038/37670 Variant Set Distributions Mapped Variants