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.
Basepair step parameters (Roll, Tilt, Twist, Slide) of the five representative conformations for CHARMM27, AMBER, and BMS. (a) Roll and Tilt parameters, (b) Twist and Slide parameters. The bold solid line marked by circles represents the basepair parameter of the x-ray structure; the solid line marked by stars represents the basepair parameter averaged over the five conformations; each of the other lines represents a different conformation.
