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.
Structure comparison of the natural B domain (magenta, PDB code 1BDC, first model) and its A2V∕G30A double mutant (Z domain, yellow, PDB code 1Q2N, first model) of protein A. The unstructured regions (residues 1–9 and 57–60) are shown in green color. The overall Cα RMSD between these two structures is 1.7 Å for residues 10–56 and the major difference is the tilt angle of the first helix.
