GR domain structure and sites of post-translational modification. Shown are the domains of GR and regions of the receptor involved in transactivation (AF1 and AF2), dimerization, nuclear localization, and hsp90 binding. Also depicted are the amino acid residues modified by phosphorylation (P), sumoylation (S), ubiquitination (U), and acetylation (A). Numbers are for human GR.