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.
Initial and final maps and models of ACG. (a) An experimentally phased map and traced polyalanine model. (b) A 2mF o − DF c map and refined model. 60 000 indexed patterns of SeMet-ACG crystals were used for the calculation. Electron-density maps are contoured at 1.0σ.
