Bacterial small-molecule three-hybrid system
First Claim
1. A transgenic bacterial cell comprising (a) a dimeric small molecule which comprises a first moiety known to bind a first receptor domain covalently linked to a second moiety capable of binding a second receptor domain, wherein the first and second moieties are different;
- (b) nucleotide sequences which upon transcription encode i) a first fusion protein comprising the first receptor domain, and ii) a second fusion protein comprising the second receptor domain; and
(c) a reporter gene wherein expression of the reporter gene is conditioned on the proximity of the first fusion protein to the second fusion protein;
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Accused Products
Abstract
A transgenic bacterial cell comprising (a) a dimeric small molecule which comprises a first moiety known to bind a first receptor domain covalently linked to a second moiety known to bind a second receptor domain; (b) nucleotide sequences which upon transcription encode i) a first fusion protein comprising the first receptor domain, and ii) a second fusion protein comprising the second receptor domain; and (c) a reporter gene wherein expression of the reporter gene is conditioned on the proximity of the first fusion protein to the second fusion protein. The cell is also adapted for use in a method for identifying a molecule that binds to a known target in a bacterial cell from a pool of candidate molecules, and a method for identifying an unknown target receptor to which a molecule is capable of binding in a bacterial cell. Also described are compounds and kits for carrying out the methods.
11 Citations
84 Claims
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1. A transgenic bacterial cell comprising
(a) a dimeric small molecule which comprises a first moiety known to bind a first receptor domain covalently linked to a second moiety capable of binding a second receptor domain, wherein the first and second moieties are different; -
(b) nucleotide sequences which upon transcription encode i) a first fusion protein comprising the first receptor domain, and ii) a second fusion protein comprising the second receptor domain; and
(c) a reporter gene wherein expression of the reporter gene is conditioned on the proximity of the first fusion protein to the second fusion protein;
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 83, 84)
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26. A transgenic bacterial cell comprising
(a) a dimeric small molecule which comprises a methotrexate moiety covalently linked to a moiety capable of binding a receptor domain; -
(b) nucleotide sequences which upon transcription encode i) a first fusion protein comprising a DHFR domain, and ii) a second fusion protein comprising the receptor domain; and
(c) a reporter gene wherein expression of the reporter gene is conditioned on the proximity of the first fusion protein to the second fusion protein. - View Dependent Claims (27, 28, 29)
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30-76. -76. (canceled)
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77. A transgenic bacterial cell comprising
(a) a dimeric small molecule which comprises a methotrexate moiety covalently linked to a moiety capable of binding a receptor domain; (b) nucleotide sequences which upon transcription encode i) a first fusion protein comprising a DHFR domain and a first fragment of an enzyme, and ii) a second fusion protein comprising the receptor domain and a second fragment of the enzyme, wherein activity of the enzyme is conditioned on the proximity of the first fragment of the enzyme to the second fragment of the enzyme. - View Dependent Claims (78, 79, 80)
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81-82. -82. (canceled)
Specification