http://news.bbc.co.uk/1/hi/health/6977423.stmThe University of Texas team manipulated the gene, called adipose, to alter the amount of fat tissue laid down by fruit flies, worms and mice.
If the same effect could be achieved in humans, which also carry the gene, it is hoped it could lead to new ways to fight obesity and diabetes.
The study is published in the journal
Cell Metabolism. Lead researcher Dr Jonathan Graff said: "From worms to mammals, this gene controls fat formation.
"It could explain why so many people struggle to lose weight, and suggests an entirely new direction for developing medical treatments that address the current epidemic of diabetes and obesity.