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Figure 2
Intermolecular interactions within the crystals. CcO dimers are drawn as ribbon models in blue. Yellow spheres are residues interacting with different molecules within 4.0 Å in each crystal. (a) Oxidized state at pH 7.3. (b) Oxidized state at pH 5.7. (c) Reduced state at pH 5.7. Residues 112, 114, 115 and 118 of subunit IV of monomer B (Q in the PDB definition), indicated by the top arrow, and residues 93, 94, 95 and 98 of subunit Vb of monomer B (S in the PDB definition), indicated by the bottom arrow, interact closely with other molecules in the pH 5.7 crystals.

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ISSN: 2053-230X
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