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a-e, Subunits of conformation A are compared to the corresponding subunit from conformation B. f-j, Superposition of subunits within conformation A. k-o, Superposition of subunits within conformation B. Chimera MatchMaker was used to generate alignments; r.m.s.d. values in Å are for Cα atoms over entire subunit. Chain IDs are in parentheses.
