Figure 4 - full size

Figure 4.
Figure 4. The different heme conformers of Ngb. Blue: conformer A (70% occupancy). Red: conformer B (30%). Close distances are: Tyr44(CD3) OH to heme propionate O2A = 2.6 Å, heme propionate O2A to Wat3 = 2.7 Å, Lys67(E10) NZ to heme propionate O1A = 2.7 Å.