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Figure 2.
Figure 2. (a) Conformation of the bound peptide. The three
turns in the peptide are formed by residues Gly-Pro-Gly-Arg
(type II), Gly-Arg-Aib-Phe (type III), and Arg-Aib-Phe-Tyr (type
I). The intra-peptide hydrogen bonds are indicated by broken
yellow lines. (b) Superimposition of the peptides RP142 (pink)
and Aib142 (blue) as seen in the two independent Fab59.1-peptide
complexes. The Fabs have been omitted from the Figure for
clarity. The peptide conformations are very similar, with rms
deviations of 0.34 Å for backbone atoms (N, C^α, C and O)
and 0.64 Å when all non-hydrogen atoms of the peptides are
considered.
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