Figure 4.
Mimicry of GB1 by heterogeneous backbones. (A) Sequence and crystal structure (PDB 2QMT) of wild-type GB1. (B) Some backbone modifications made to GB1, grouped by secondary structure context. All panels are from published crystal structures of GB1 variants (PDB: 5HFY, 5HI1, 4OZB, 4OZC, 4KGR, 4KGS, 4KGT), except data for the PEG-modified loop (from a molecular dynamics simulation) and the γcyc-modified sheet (from the NMR structure of a hairpin peptide).
