|
Figure 5.
Fig. 5. Hypothesis for pathway of electron transfer between ISP
and cytochrome f. (A) Side views showing the cytochrome f and
ISP extrinsic domains in the crystal structure (left) and the
model in which the soluble domain of ISP is rotated by 25°
toward cytochrome f (right). His26 and Leu27 (orange) are shown
in a ball-and-stick model. Distances between Leu27 (cytochrome
f) and His129 (ISP) are shown as dotted lines: 21 Å in the
crystal structure and 5 Å in the model after 25°
rotation. The rotational trajectory of the [2Fe-2S] cluster in
the proposed model is shown as a dotted arrow. Color code is as
in Fig. 2A. (B) Schematic drawing around the [2Fe-2S] cluster
and cytochrome f heme, showing the distances in the experimental
and model structures.
|
