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Figure 4.
Figure 4. (a) The association of molecules A and B showing a
number of residues from both the molecules (black) and solvent
molecules (red) involved in the interactions between two
molecules: molecule A, Leu2, Leu17, Ala18, Ile19, Pro20, Trp31,
Arg43, Phe46, Ser70, Arg72, Met118, Leu119 and Asp122; molecule
B, Thr36, Ala40, Arg43, Phe46, Val47, Asn54, Glu97, Lys100,
Ile104, Gln108, Asn111, Leu130, Lys131 and Cys133 and 31 solvent
molecules. (b) Spatially two adjacent fragments 55–61 and
85–94. The segment 55–61 forms a β-turn I with a hydrogen
bond between Leu55 (O) and Cys61 (N). A tight loop, 85-94, is
stabilized by a number of intra-loop hydrogen bonds which are
indicated by dotted lines. The inter-segmental hydrogen bonds
(red, broken lines) are also indicated.
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