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Figure 4.
Fig. 4. Molecular interactions at the dimer interface. (a)
The aromatic ring of Phe-27 in one monomer (green) becomes
intercalated between the aromatic rings of two His residues in
the other monomer (red). This hydrophobic sandwich is part of an
extended hydrophobic array (see text). (b) Extensive
hydrogen-bonding networks (blue dotted lines) occur between the
two monomers.
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