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Fat mass and obesity-associated protein (FTO) is a novel protein and a member of the non-heme dioxygenase (Fe(II)- and 2-oxoglutarate-dependent dioxygenases) superfamily. Though not much is yet known about FTO, it is thought that the protein may somehow modify the activity of genes involved in metabolism and fat storage, which in turn may influence a person's risk of obesity.
FTO antibodies are useful tools for lipid metabolism research and obesity studies.