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Proctor EA, Kota P, Aleksandrov AA, et al. Rational Coupled Dynamics Network Manipulation Rescues Disease-Relevant Mutant Cystic Fibrosis Transmembrane Conductance Regulator. Chem Sci. 2015;6(2):1237-1246doi: 10.1039/C4SC01320D.
Proctor, E. A., Kota, P., Aleksandrov, A. A., He, L., Riordan, J. R., & Dokholyan, N. V. (2015). Rational Coupled Dynamics Network Manipulation Rescues Disease-Relevant Mutant Cystic Fibrosis Transmembrane Conductance Regulator. Chemical science, 6(2), 1237-1246. https://doi.org/10.1039/C4SC01320D
Proctor, Elizabeth A, et al. "Rational Coupled Dynamics Network Manipulation Rescues Disease-Relevant Mutant Cystic Fibrosis Transmembrane Conductance Regulator." Chemical science vol. 6,2 (2015): 1237-1246. doi: https://doi.org/10.1039/C4SC01320D
Proctor EA, Kota P, Aleksandrov AA, He L, Riordan JR, Dokholyan NV. Rational Coupled Dynamics Network Manipulation Rescues Disease-Relevant Mutant Cystic Fibrosis Transmembrane Conductance Regulator. Chem Sci. 2015 Feb;6(2):1237-1246. doi: 10.1039/C4SC01320D. PMID: 25685315; PMCID: PMC4324596.
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Chem Sci. 2015 Feb;6(2):1237-1246. doi: 10.1039/C4SC01320D.

Rational Coupled Dynamics Network Manipulation Rescues Disease-Relevant Mutant Cystic Fibrosis Transmembrane Conductance Regulator.

Chemical science

Elizabeth A Proctor, Pradeep Kota, Andrei A Aleksandrov, Lihua He, John R Riordan, Nikolay V Dokholyan

Affiliations

  1. Curriculum in Bioinformatics and Computational Biology, University of North Carolina, Chapel Hill, NC 27599, USA ; Program in Molecular and Cellular Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA.
  2. Program in Molecular and Cellular Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA ; Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA.
  3. Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA ; Cystic Fibrosis Treatment and Research Center, University of North Carolina, Chapel Hill, NC 27599, USA.
  4. Curriculum in Bioinformatics and Computational Biology, University of North Carolina, Chapel Hill, NC 27599, USA ; Program in Molecular and Cellular Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA ; Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, NC 27599, USA ; Cystic Fibrosis Treatment and Research Center, University of North Carolina, Chapel Hill, NC 27599, USA.

PMID: 25685315 PMCID: PMC4324596 DOI: 10.1039/C4SC01320D

Abstract

Many cellular functions necessary for life are tightly regulated by protein allosteric conformational change, and correlated dynamics between protein regions has been found to contribute to the function of proteins not previously considered allosteric. The ability to map and control such dynamic coupling would thus create opportunities for the extension of current therapeutic design strategy. Here, we present an approach to determine the networks of residues involved in the transfer of correlated motion across a protein, and apply our approach to rescue disease-causative mutant cystic fibrosis transmembrane regulator (CFTR) ion channels, ΔF508 and ΔI507, which together constitute over 90% of cystic fibrosis cases. We show that these mutations perturb dynamic coupling within the first nucleotide-binding domain (NBD1), and uncover a critical residue that mediates trans-domain coupled dynamics. By rationally designing a mutation to this residue, we improve aberrant dynamics of mutant CFTR as well as enhance surface expression and function of both mutants, demonstrating the rescue of a disease mutation by rational correction of aberrant protein dynamics.

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