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.
Superimposition of the backbone structures of wild-type and mutant RNase A. This figure was drawn with the MOLSCRIPT program (Kraulis 1991). Yellow, red, green, and cyan are wild-type, F120A, F120G, and F120W enzymes, respectively. Loops 1, 2, 3, and 4 represent the loop regions of 15–25, 34–41, 65–72, and 87–97, respectively.
