Tiny ticker | Science News

ADVERTISEMENT

MISSION CRITICAL

Support credible science journalism.

Subscribe to Science News today.


News

Tiny ticker

By
2:35pm, February 27, 2006

Researchers have demonstrated that they can control how frequently a DNA-based nanodevice changes between two forms. Their "nanometronome" is the first example of such control over a single DNA molecule, the team contends.

The device consists of four strands of DNA, which in water assemble into a clover-shape structure. In the presence of magnesium ions, the assembly randomly switches between two stable, X-shaped forms, each with different strands paired into helices. The "ticking" rate between the two forms is mere milliseconds, the team reports.

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from this issue of Science News

[title_1]
From the Nature Index Paid Content