Protein turnover by the proteasome in aging and disease 1,2 1This article is part of a series of reviews on “Oxidatively Modified Proteins in Aging and Disease.” The full list of papers may be found on the homepage of the journal.Davies and Shringarpure are studying the mechanism by which the proteasome recognizes and degrades oxidatively damaged proteins, and how protein oxidation and proteolysis are affected by aging and disease. 2Guest Editor: Earl Stadtman