C-Sixty's fullerene-based drug scuppers this process by settling snugly into the enzyme's active site, stopping it functioning.

ECONOMIST: Nanotechnology in biology

Using this data, Adams in 1995 concocted an unusual boron molecule that snuggled into one of the enzyme's active sites and blocked its function.

FORBES: Magazine Article

Dr Wilson and his colleagues have discovered that the complex finds its way to the active site of a viral enzyme known as reverse transcriptase.

ECONOMIST: Nanotechnology in biology

These work by binding chemically to that enzyme's active site to inhibit its action. (Protease cuts the raw chain of virus protein produced by a subverted cell into functional molecules.) However, the mechanism is not quite identical.

ECONOMIST: Nanotechnology in biology