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Turbo Gene: Getting a speed boost from DNA

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11:11am, July 30, 2003

Whether you're better suited to run a marathon or a 100-meter sprint correlates with a gene called ACTN3, researchers find.

The gene encodes the protein alpha-actinin-3, which functions in the so-called fast-twitch muscles. These muscles give the extra power needed for brief and vigorous bursts of activity, such as sprinting and speed skating.

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