Figure 3.
Figure 3. Comparison of the heme orientation of Ch-CooA
(green) and Rr-CooA (cyan). His82 of Ch-CooA and His77 of
Rr-CooA are superimposed. The meso α–γ axis is shown as a
dotted line. The heme is rotated by vert,
similar 30° about the normal of the heme plane in Im-bound
Ch-CooA relative to Rr-CooA. In Im-bound Ch-CooA, the heme
propionates interact with Lys194 in the DNA-binding domain and
Arg84 in the effector-binding domain, while the heme propionate
of Rr-CooA interacts with Arg4 in the N-terminal region.
The above figure is reprinted
by permission from Elsevier:
J Mol Biol
(2007,
367,
864-871)
copyright 2007.
vert,
similar 30° about the normal of the heme plane in Im-bound
Ch-CooA relative to Rr-CooA. In Im-bound Ch-CooA, the heme
propionates interact with Lys194 in the DNA-binding domain and
Arg84 in the effector-binding domain, while the heme propionate
of Rr-CooA interacts with Arg4 in the N-terminal region.