Method for assaying protein—protein interaction
First Claim
1. A method for determining if a test compound modulates a specific protein/protein interaction of interest, comprising contacting said compound to a cell which has been transformed or transfected with:
- (a) a first nucleic acid molecule which encodes a first, fusion protein, said first nucleic acid molecule comprising;
(i) a nucleotide sequence which encodes a first test protein,(ii) a nucleotide sequence encoding a cleavage site for a protease or a portion of a protease, and(iii) a nucleotide sequence which encodes a protein which activates a reporter gene in said cell, and(b) a second nucleic acid molecule which encodes a second, fusion protein, said second nucleic acid molecule comprising;
(i) a nucleotide sequence which encodes a second test protein whose interaction with said first test protein in the presence of said test compound is to be measured, and(ii) a nucleotide sequence which encodes a protease or a portion of a protease which is specific for said cleavage site,and determining activity of said reporter gene as a determination of whether said compound modulates said protein/protein interaction.
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Accused Products
Abstract
The invention relates to a method for determining if a test compound, or a mix of compounds, modulates the interaction between two proteins of interest. The determination is made possible via the use of two recombinant molecules, one of which contains the first protein a cleavage site for a proteolytic molecules, and an activator of a gene. The second recombinant molecule includes the second protein and the proteolytic molecule. If the test compound binds to the first protein, a reaction is initiated whereby the activator is cleaved, and activates a reporter gene.
44 Citations
42 Claims
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1. A method for determining if a test compound modulates a specific protein/protein interaction of interest, comprising contacting said compound to a cell which has been transformed or transfected with:
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(a) a first nucleic acid molecule which encodes a first, fusion protein, said first nucleic acid molecule comprising; (i) a nucleotide sequence which encodes a first test protein, (ii) a nucleotide sequence encoding a cleavage site for a protease or a portion of a protease, and (iii) a nucleotide sequence which encodes a protein which activates a reporter gene in said cell, and (b) a second nucleic acid molecule which encodes a second, fusion protein, said second nucleic acid molecule comprising; (i) a nucleotide sequence which encodes a second test protein whose interaction with said first test protein in the presence of said test compound is to be measured, and (ii) a nucleotide sequence which encodes a protease or a portion of a protease which is specific for said cleavage site, and determining activity of said reporter gene as a determination of whether said compound modulates said protein/protein interaction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 27)
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21. A method for determining if a test compound modulates one or more of a plurality of protein interactions of interest, comprising contacting said test compound to a plurality of samples of cells, each of which has been transformed or transfected with
(a) a first nucleic acid molecule which encodes a first, fusion proteins, said first nucleic acid molecule comprising: -
(i) a nucleotide sequence which encodes a first test protein, (ii) a nucleotide sequence encoding a cleavage site for a protease, and (iii) a nucleotide sequence which encodes a protein which activates a reporter gene in said cell, (b) a second nucleic acid molecule which encodes a second, fusion protein said second nucleic acid molecule comprising; (i) a nucleotide sequence which encodes a second test protein whose interaction with said first test protein in the presence of said test compound of interest is to be measured, (ii) a nucleotide sequence which encodes a protease or a protease which is specific for said cleavage site, wherein said first test protein differs from other first test proteins in each of said plurality of samples, and determining activity of said reporter gene in at one or more of said plurality of samples as a determination of modulation of one or more protein interactions of interest. - View Dependent Claims (22, 23, 24, 25, 26)
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28. A test kit useful for determining if a test compound modulates a specific protein/protein interaction of interest comprising a separate portion of each of:
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(a) a first nucleic acid molecule which encodes a first, fusion protein, said first nucleic acid molecule comprising; (i) a nucleotide sequence which encodes said first test protein, (ii) a nucleotide sequence encoding a cleavage site for a protease or a portion of a protease, (iii) a nucleotide sequence which encodes a protein which activates a reporter gene in said cell, and (b) a second nucleic acid molecule which encodes a second, fusion protein, said second nucleic acid molecule comprising; (i) a nucleotide sequence which encodes a second test protein whose interaction with said first test protein in the presence of said test compound is to be measured, (ii) a nucleotide sequence which encodes a protease or a portion of a protease which is specific for said cleavage site, and (c) container means for holding each of (a) and (b) separately from each other. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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Specification