Figure 2.
CD spectrum of the proline-rich segment of TonB. The CD spectrum of the TonB wild-type fragment containing residues 56–126 shows the characteristic feature of a polyproline-II-helical structure.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.