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.
A 2F o − F c, σA-weighted electron-density map of a model perturbed by shifts in each atom of up to 0.2 Å with the chromophore omitted. This map should show an unbiased view of the chromophore. The map is contoured at 1.2σ around Cys84 of the α subunit and the covalently attached phycocyanobilin chromophore (in blue) and the Thr74 of chain B (in green), with the hydrogen bond indicated between the chromophore and the backbone N atom of Thr74.
