Crystal structures of HiPIP at 0.8 Å.

<p>(A) Differences between the reduced and oxidized forms. The structures in the oxidized and reduced states are superimposed and represented in orange and green, respectively. Hydrogen atoms are omitted from the figure for clarity. (B) Multi-conformational residues in the oxidized and reduced states are represented as orange and green sticks, respectively. Depth of colors reflects the occupancy of each conformation at the residue. Single-conformational residues and the iron-sulfur cluster are represented as gray tubes and sticks, respectively.