Fig. 1. Percentage distribution of R in all the 15 968 biological SHBs and in 2187 SHBs that involve ligands.
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.