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.
Internal coordinate vs. Cartesian coordinate representation. Internal coordinates describe a protein structure in terms of angles, lengths, and torsions; Cartesian coordinates describe a protein's conformation using the (x, y, z) position of each atom.
