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. 2011 Mar 23;20(6):1077–1081. doi: 10.1002/pro.627

Figure 3.

Figure 3

Pyramidalization in α/β peptides. The parameter θ is a measure of pyramidalization (Fig. 1). Data are from crystal structures in the CCDC.26–30 •, α-amino acid residue; ○, β-amino acid residue. A: (αβ)n (all 14); CCDC refcode OGATAS, CAXRID, OGASOF, OGASUL, OGATEW, OGATIA, COVFUP, OGATOG, OGATUM, OGAVAU, OGAVEY, OGAVIC, OGAVOI, and COVGAW. B: (αβ)n (subset); CCDC refcode COVFUP, OGATUM, and OGAVAU. C: (α2β)n; CCDC refcode PUCCIA and PUCCOG (two asymmetric units). D: (αβ2)n; CCDC refcode PUCCUM, PUCDEX, and PUCDUN.