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. 2010 Jan 20;98(2):305–314. doi: 10.1016/j.bpj.2009.10.016

Figure 4.

Figure 4

Superposition of CRPEC with CRPMt. (A) Superposition of the A-chains of all three structures—apo (blue), binary complex with cAMP (gray), and ternary complex with cAMP and DNA (green)—shows that the conformations of one subunit in all of the structures are almost identical. (B) Superposition of the B-chains in the three structures, with the same coloring scheme as in panel A. It is clear that the apo structure has a distinct conformation compared to both the binary and ternary complexes.