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Figure 4.
Figure 4. Comparison of the hydrogen-bonding interactions
within the linker region. (a) Superposition of active MMP-1
(pink) and procollagenase-1 (green) to highlight the
conformational similarity of the linker region in the two
structures. (b) Stereo view of the linker region in active MMP-1
showing the hydrogen-bonding interactions between the residues.
(c) Stereo view of the linker region in procollagenase-1 showing
the hydrogen bonds within the region.
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