PUBLICATION

Anchor extension: a structure-guided approach to design cyclic peptides targeting enzyme active sites

Authors
Hosseinzadeh, P., Watson, P.R., Craven, T.W., Li, X., Rettie, S., Pardo-Avila, F., Bera, A.K., Mulligan, V.K., Lu, P., Ford, A.S., Weitzner, B.D., Stewart, L.J., Moyer, A.P., Di Piazza, M., Whalen, J.G., Greisen, P.J., Christianson, D.W., Baker, D.
ID
ZDB-PUB-210616-1
Date
2021
Source
Nature communications   12: 3384 (Journal)
Registered Authors
Keywords
none
MeSH Terms
  • Peptides, Cyclic/chemistry
  • Peptides, Cyclic/pharmacology*
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/ultrastructure
  • Histone Deacetylase Inhibitors/chemistry
  • Histone Deacetylase Inhibitors/pharmacology*
  • Nuclear Magnetic Resonance, Biomolecular
  • Inhibitory Concentration 50
  • Enzyme Assays
  • Histone Deacetylase 2/antagonists & inhibitors
  • Histone Deacetylase 2/isolation & purification
  • Histone Deacetylase 2/metabolism
  • Histone Deacetylase 2/ultrastructure
  • Drug Design*
  • Molecular Docking Simulation
  • Histone Deacetylase 6/antagonists & inhibitors
  • Histone Deacetylase 6/genetics
  • Histone Deacetylase 6/isolation & purification
  • Histone Deacetylase 6/ultrastructure
  • Crystallography, X-Ray
  • Peptide Library
  • Catalytic Domain/drug effects
  • Structure-Activity Relationship*
  • Recombinant Proteins/genetics
  • Recombinant Proteins/isolation & purification
  • Recombinant Proteins/metabolism
  • Recombinant Proteins/ultrastructure
PubMed
34099674 Full text @ Nat. Commun.
Abstract
Despite recent success in computational design of structured cyclic peptides, de novo design of cyclic peptides that bind to any protein functional site remains difficult. To address this challenge, we develop a computational "anchor extension" methodology for targeting protein interfaces by extending a peptide chain around a non-canonical amino acid residue anchor. To test our approach using a well characterized model system, we design cyclic peptides that inhibit histone deacetylases 2 and 6 (HDAC2 and HDAC6) with enhanced potency compared to the original anchor (IC50 values of 9.1 and 4.4 nM for the best binders compared to 5.4 and 0.6 µM for the anchor, respectively). The HDAC6 inhibitor is among the most potent reported so far. These results highlight the potential for de novo design of high-affinity protein-peptide interfaces, as well as the challenges that remain.
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