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.
Electron density maps for crambin based on most intense hkℓ reflections (|Fh| ≥ 190). Projection down x: (a) Ideal solution. (b) Direct methods. Projection down y: (c) Ideal solution. (d) Direct methods. The peptide backbone links Cα carbon positions from the x-ray model.
