Calorimetric dissection of colicin DNase--immunity protein complex specificity.
We explore the thermodynamic strategies used to achieve specific, high-affinity binding within a family of conserved protein-protein complexes. Protein-protein interactions are often stabilized by a conserved interfacial hotspot that serves as the anchor for the complex, with neighboring variable residues providing specificity. A key question for such complexes is the thermodynamic basis for specificity given the dominance of the hotspot. We address this question using, as our model, colicin ...Expand abstract
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