Novel uses for gal4-receptor constructs

C - Chemistry – Metallurgy – 12 – Q

Patent

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Details

C12Q 1/68 (2006.01) C07K 14/395 (2006.01) C07K 14/72 (2006.01) C12Q 1/00 (2006.01) G01N 33/50 (2006.01) G01N 33/566 (2006.01)

Patent

CA 2180271

In accordance with the present invention, it has been discovered that chimeric receptors comprising at least the ligand binding domain of a member of the steroid/thyroid receptor protein superfamily having incorporated therein the DNA binding domain of the yeast GAL4 protein are capable of forming functional homodimers. Such homodimers are useful, for example, in assays to determine the ligand for an orphan member of the steroid/thyroid superfamily of receptors, for identifying compounds which are selective for a specific steroid/thyroid receptor protein from among a plurality of such receptors which respond to a common ligand, and the like.

Selon la présente invention, les récepteurs chimères comprenant au moins le domaine de liaison des ligands d'un membre de la super famille des protéines réceptrices thyroïdiennes/stéroïdiennes, dans laquelle est intégré le domaine de liaison de l'ADN de la protéine GAL4 de la levure, peuvent former des homodimères fonctionnels. De tels homodimères peuvent être utilisés, par exemple, dans des dosages permettant de déterminer le ligand pour un membre orphelin de la super famille des récepteurs thyroïdiens/stéroïdiens, pour identifier les composés qui sont sélectifs par rapport à une protéine réceptrice thyroïdienne/stéroïdienne spécifique, à partir d'une pluralité de récepteurs de ce type qui réagissent à un ligand commun, et similaires.

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