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Figure 6.
Figure 6. Ligand pocket comparison among lipocalins. (a)
Stereoview of the superimposed ligand-binding regions of NP4
(green, with heme), BBP (blue) and INS (red). His61 in BBP and
His131 in INS are close to the NP4 heme iron. (b) Stereo overlay
of BBP, with the biliverdin (blue), and NP4 heme (green).
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