An official website of the United States government
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.
Inhibitory and activating properties of arylstibonic acids on supercoil relaxation by hTopo I (black bars) and vTopo (open bars). Screening reactions contained 5 μM compound, 14 nM pUC19 plasmid DNA and 1 nM hTopo or vTopo (see Methods).