Use of templated self assembly to create novel multifunctional species
First Claim
Patent Images
1. A bifunctional polypeptide comprising a binding ligand linked to a first member of a coil-coil binding pair and a reporter molecule linked to the second member of a coil-coil binding pair, wherein binding between the first coil domain and the second coil domain joins the binding ligand to the reporter molecule.
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Abstract
The present invention provides self-assembling bifunctional polypeptides, kits comprising the self assembling bifunctional polypeptides, methods for assembling the bifunctional polypeptides, and methods for screening for the presence of an antigen using the bifunctional polypeptides.
38 Citations
59 Claims
- 1. A bifunctional polypeptide comprising a binding ligand linked to a first member of a coil-coil binding pair and a reporter molecule linked to the second member of a coil-coil binding pair, wherein binding between the first coil domain and the second coil domain joins the binding ligand to the reporter molecule.
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18. A multifunctional polypeptide comprising:
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a first member of a coil-coil binding pair linked to a binding ligand; and
a second member of the coil-coil binding pair linked to a polypeptide that undergoes spontaneous multimerization to form a self-assembled complex;
wherein binding between the first member of the coil-coil binding pair and the second member of the coil-coil pair joins the binding ligand and the self-assembled complex. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A kit comprising:
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a binding ligand linked to a first member of a coil-coil binding pair; and
a reporter molecule linked to a second member of a coil-coil binding pair. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44)
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45. A kit comprising:
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a first subunit that is a first member of a coil-coil binding pair linked to a binding ligand; and
a second subunit that is a second member of the coil-coil binding pair linked to a polypeptide that undergoes spontaneous multimerization. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. A method of making a multifunctional polypeptide, the method comprising:
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providing a binding ligand linked to a first member of a coil-coil binding pair;
providing a molecule linked to a second member of a coil-coil binding pair, wherein the molecule is a reporter molecule or a spontaneously multimerizing polypeptide; and
incubating the binding pair under conditions in which the first binding pair member specifically binds to the second binding pair member, thereby assembling the bifunctional polypeptide.
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56. A method of screening for the presence of an antigen, the method comprising:
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incubating a sample comprising the antigen with a bifunctional polypeptide comprising a binding ligand linked to a first member of a coil-coil binding pair and a reporter molecule linked to the second member of the coil-coil binding pair, wherein the binding ligand is joined to the reporter polypeptide by the binding interaction between the binding pair members;
wherein the antigen and the bifunctional polypeptide are incubated under conditions in which the antigen specifically binds to the binding ligand; and
detecting activity of the reporter molecule, thereby detecting the presence of the antigen.
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57. A method of screening for the presence of an antigen, the method comprising:
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incubating a sample comprising the antigen with a binding ligand linked to a first member of a coil-coil binding pair under conditions in which the antigen specifically binds to the binding ligand and subsequently incubating the sample with a reporter molecule linked to the second member of the coil-coil binding pair, wherein the binding ligand becomes joined to the reporter molecule by the binding interaction between the binding pair members; and
detecting activity of the reporter polypeptide, thereby detecting the presence of the antigen.
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58. A method of screening for the presence of an antigen, the method comprising:
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(a) incubating a sample comprising the antigen with a bifunctional polypeptide comprising;
(i) a binding ligand linked to a first member of a coil-coil binding pair; and
(ii) a polypeptide that undergoes spontaneous multimerization linked to the second member of a coil-coil binding pair, wherein binding between the first coil domain and the second coil domain joins the binding ligand and the spontaneously multimerizing polypeptide, wherein the antigen and the bifunctional polypeptide are incubated under conditions in which the antigen specifically binds to the binding ligand; and
(b) detecting the presence of the bifunctional polypeptide, thereby detecting the presence of the antigen.
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59. A method of screening for the presence of an antigen, the method comprising:
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incubating a sample comprising the antigen with a binding ligand linked to a first member of a coil-coil binding pair under conditions in which the antigen specifically binds to the binding ligand and subsequently incubating the sample with a second polypeptide linked to a second member of the coil-coil binding pair, wherein the second polypeptide undergoes spontaneous multimerization;
wherein the binding ligand is joined to the second polypeptide by the binding interaction between the coil-coil binding pair members to form a multifunctional polypeptide; and
detecting the presence of the multifunctional polypeptide, thereby detecting the presence of the antigen.
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Specification