Epitope-captured antibody display
First Claim
1. An array of polypeptides, comprising(a) a support;
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wherein;
each of the replicable genetic package/antibody reagents comprises;
(i) a replicable genetic package having a heterologous nucleic acid segment that encodes a polypeptide displayed on the replicable genetic package; and
(ii) a captured antibody bound to the displayed polypeptide, wherein the captured antibody has a plurality of binding sites with at least one first binding site having specific binding affinity for the displayed polypeptide and at least one second binding site which is unbound; and
the replicable genetic package of each package/antibody reagent is immobilized on the support.
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Accused Products
Abstract
Reagents and methods for detecting target proteins in a sample are provided. The reagents include a replicable genetic package, a protein displayed on an exterior surface of the package that is expressed from a heterologous nucleic acid borne by the package, and one or more antibodies complexed with the expressed protein and which have an open binding site for a target protein. Thus, a segment of the nucleic acid encodes for an epitope that is shared by the expressed polypeptide and the target protein. The reagents can be utilized individually or as part of a library or an array to bind target proteins within protein samples to form one or more complexes. By determining the sequence of the segment of the heterologous nucleic acid of a package within a complex, one can identify the target protein since the segment encodes for an epitope that is shared by the expressed and target proteins.
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Citations
27 Claims
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1. An array of polypeptides, comprising
(a) a support; - and
(b) a plurality of replicable genetic package/antibody reagents (package/antibody reagents) immobilized at different locations on the support;
wherein;each of the replicable genetic package/antibody reagents comprises; (i) a replicable genetic package having a heterologous nucleic acid segment that encodes a polypeptide displayed on the replicable genetic package; and (ii) a captured antibody bound to the displayed polypeptide, wherein the captured antibody has a plurality of binding sites with at least one first binding site having specific binding affinity for the displayed polypeptide and at least one second binding site which is unbound; and the replicable genetic package of each package/antibody reagent is immobilized on the support. - 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, 26, 27)
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Specification