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Figure 3.
Figure 3. Loop ordering on NO binding. Space filling views of
the distal pockets in the NP4 -NO (left) and NP4 -CN- (right)
structures. The view is from above the distal pocket, with heme
shown in black, heme oxygens in orange, NO in magenta, CN- in
cyan, five water molecules in red, and loops A-B and G-H in
green. Binding of NO leads to reordering of the A-B and G-H
loops, expulsion of the water molecules, burying of NO and Asp
30, and packing of Leu 130 against the NO molecule.
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