Caption：The figure combines a set of very similar structures that satisfy the data on atomic interctions. Only the backbone of the polypeptide is shown. Compare this structure with that in Figure 4.3b. Note the presence here of disulfide bridges (yellow) which are not shown in the X-ray derived structure. [PDB code 2AAS]
Notes:This figure consists of 32 superimposed NMR structures. The disulfide bridges are present in the X-ray derived structure although they are not shown.