| 摘要 |
A novel polypeptide useful in screening an insulin resistance improving agent and a carbohydrate metabolism improving agent, a polynucleotide coding for the aforementioned polypeptide, an expression vector comprising the aforementioned polynucleotide, and a cell transfected with the aforementioned expression vector are disclosed. The aforementioned polypeptide is a protein which is expressed in fat, and the activity of Akt2 is reduced in a fat cell in which the protein is highly expressed. A method for screening an insulin resistance improving agent and a carbohydrate metabolism improving agent using the aforementioned polypeptide, and a method for producing a pharmaceutical composition for insulin resistance improvement and carbohydrate metabolism improvement, which uses a substance obtained by said screening method as the active ingredient, are disclosed.
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