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Organization of Rpns and previously unresolved features. (A) Reconstruction filtered to 4 Å resolution and colored according to subunits. (B) Reconstruction filtered to 7 Å resolution and colored according to subunits. (C) Atomic model colored according to subunits. (D) Obstruction of OB ring by C terminus of Rpn3. (E) Interaction of Sem1 and Rpn3. (F) Connecting density between Rpn1 and Rpn2.
