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.
Diffusion of a tight knot along a stretched DNA molecule. The diagram illustrates the experimental design of the system (15). DNA is attached to the beads, which are manipulated by optical tweezers. The stretching force, F, is applied to the beads. The simulated conformation of a DNA molecule 3000 bp in length was used for the illustration. DNA molecules 16 times longer were used in the experiments.
