Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2014 Nov 5;141(17):174902. doi: 10.1063/1.4900657

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2014 Author(s).

0021-9606/2014/141(17)/174902/10

All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

PMC Copyright notice

FIG. 8. — Free-energy landscape ΔF(ℓ, L; P) of a dual-loop DNA synaptic complex. (a) ΔF as a function of contour to persistence length ratio, L/P, and fractional contour length ℓ/L (cf. Fig. 2). At a critical value L/P ≈ 10.7, the minimum for ΔF (black dots) bifurcates from a single minimum at m = L/2 into two separate minima at m₁ < L/2 and m₂ = (L − m₁) > L/2, respectively. Black curves labeled a, b, c represent free energy profiles for fixed ratio L/P. (b) ΔF along a circular DNA molecule with fixed ratio L/P, corresponding to curves a, b, c in (a), as a function of the separation ℓ (to scale). One of the synapse sites is located at the top of each circle. Values of ΔF are represented by colors as shown. Chain a: L/P = 8 (about 1200 base pairs), with a single minimum m; chain b: critical value L/P ≈ 10.7 (about 1600 base pairs); chain c: L/P = 14 (about 2100 base pairs), with two separate minima m₁ and m₂.