Figure 2. Rnk interdomain orientation.
(A) Ec Rnk (red) superposition with Ec GreA (yellow; 10 and Taq Gfh1 23. The structures have been superimposed on the C-terminal FKBP domain. The Rnk coiled-coil is rotated 104° away from the coiled-coil position observed in Ec GreA. The Rnk coiled-coil is 22 Å shorter than the GreA and Gfh1 coiled-coils.
(B) Ec Rnk interdomain hydrogen bond network. Side chains of N-terminal residues Arg3, Asn9, and Asp12 interact with amino-acids Thr55, Tyr77, Leu99, and Glu129 of the C-terminal FKBP domain.