Patent ID: 7371541

Claim:
An isolated polynucleotide comprising a nucleotide sequence selected from the group consisting of: (a) a nucleotide sequence encoding the amino acid sequence represented by SEQ ID NO:1; (b) a nucleotide sequence encoding an amino acid sequence of a protein involved in a G protein-coupled receptor mediated signal transduction, wherein said protein has an ability to mediate a signal transduction from a dopamine D1 receptor or an adenosine A2a receptor to an adenylate cyclase, and wherein said amino acid sequence has a homology of 85% or more with the amino acid sequence of SEQ ID NO:1, and retains amino acid sequences represented by amino acid residues 119 to 133, 287 to 292, 353 to 359, and 428 to 435 in the amino acid sequence of SEQ ID NO:1; (c) a nucleotide sequence encoding the amino acid sequence represented by SEQ ID NO:25; (d) a nucleotide sequence encoding the amino acid sequence represented by SEQ ID NO:26; (e) the nucleotide sequence represented by SEQ ID NO:2; (f) the nucleotide sequence represented by SEQ ID NO:27; and (g) the nucleotide sequence represented by SEQ ID NO:28.