Figure 1.
Mirror-image triple helices. (a) Structural models of [(LPLPG)10]3 and [(DPDPG)10]3 triple helices. The [(LPLPG)10]3 model was obtained from a high-resolution (1.30 Å) X-ray crystal structure (PDB: 1K6F) 19. (b) CD spectra at 4 °C. [(LPLPG)10]3 and [(DPDPG)10]3 refer to triple helices comprised of three chains with ten repeating units of PPG.