ArticleBiochemistry2024
Rational Design of High Affinity Interaction Between CC Chemokine Binding Protein vCCI and CCL17/TARC.
Article in Biochemistry, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
The poxvirus-derived protein vCCI (viral CC chemokine inhibitor) binds almost all members of the CC chemokine family with nanomolar affinity, inhibiting their pro-inflammatory actions. Understanding the affinity and specificity of vCCI could lead to new anti-inflammatory therapeutics. CCL17, also known as TARC, is unusual among CC chemokines by having only micromolar binding to vCCI. We have used sequence analysis and molecular simulations to determine the cause of this weak binding, which identified several locations in CCL17 where mutations seemed likely to improve binding to vCCI. Based on the aforementioned analysis, we expressed and tested multiple mutants of CCL17. We found two single point mutants V44K and Q45R that increased binding affinity to vCCI by 2-3-fold and, in combination, further improved affinity by 7-fold. The CCL17 triple mutant G17R/V44K/Q45R yielded a
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