Naturally occurring, pharmacologically active peptides constrained with covalent crosslinks generally have shapes that have evolved to fit precisely into binding pockets on their targets. Such peptides can have excellent pharmaceutical properties, combining the stability and tissue penetration of small-molecule drugs with the specificity of much larger protein therapeutics. The ability to design constrained peptides with precisely specified tertiary structures would enable the design of shape-complementary inhibitors of arbitrary targets. Here we describe the development of computational methods for accurate de novo design of conformationally restricted peptides, and the use of these methods to design 18–47 residue, disulfide-crosslinked peptides, a subset of which are heterochiral and/or N–C backbone-cyclized. Both genetically encodable and non-canonical peptides are exceptionally stable to thermal and chemical denaturation, and 12 experimentally determined X-ray and NMR structures are nearly identical to the computational design models. The computational design methods and stable scaffolds presented here provide the basis for development of a new generation of peptide-based drugs.
Accurate de novo design of hyperstable constrained peptides
G. Bhardwaj,V. Mulligan,C. Bahl,Jason M. Gilmore,P. Harvey,O. Cheneval,G. W. Buchko,S. Pulavarti,Q. Kaas,A. Eletsky,Po-Ssu Huang,W. Johnsen,Per Greisen,G. Rocklin,Yifan Song,Thomas W. Linsky,A. Watkins,Stephen A. Rettie,Xianzhong Xu,L. Carter,Richard Bonneau,J. Olson,E. Coutsias,C. Correnti,T. Szyperski,D. Craik,David Baker
Published 2016 in Nature
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- Publication year
2016
- Venue
Nature
- Publication date
2016-09-14
- Fields of study
Medicine, Chemistry, Computer Science
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Semantic Scholar, PubMed
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