Converting weak binders into infinite binders.

Abstract excerpt

Monoclonal antibody 2D12.5 binds DOTA chelates of all the rare earths with K(d) approximately 10(-)(8) M, making it useful for the capture of probe molecules with a variety of properties. To make 2D12.5 even more useful for biological applications, we have engineered a single cysteine residue at position 54 of the heavy chain, a site proximal to the protein's binding site, so that weakly electrophilic metal...

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