摘要：

The invention relates to novel polypeptides having receptor activity dopaminergic containing the sequence of 446 amino acids of Figure 1 or a fragment of this sequence, TAL and this fragment, OR CONTAINS HOWEVER sites contained in this sequence And whose presence is necessary so that when this fragment is exposed on the surface of a cell, is capable of binding the dopamine agonists or antagonists thereof specifically and measurably, for example by A radioligand, OR IS SUSCEPTIBLE TO being recognized by antibodies also recognizing said sequence of 446 amino acids, but recognize neither THE dopamine receptor D-1, NOR dopamine receptor D-2, or is likely to generate antibodies recognizing said sequence of 446 amino acids but NOT RECOGNIZED NOR dopamine receptor D-1, NOR-2 dopamine receptor D.

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