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Title: Peptide design by optimization on a data-parameterized protein interaction landscape

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
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  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Koch Inst. for Integrative Cancer Research, Cambridge, MA (United States)

Many applications in protein engineering require optimizing multiple protein properties simultaneously, such as binding one target but not others or binding a target while maintaining stability. Such multistate design problems require navigating a high-dimensional space to find proteins with desired characteristics. A model that relates protein sequence to functional attributes can guide design to solutions that would be hard to discover via screening. In this work, we measured thousands of protein–peptide binding affinities with the high-throughput interaction assay amped SORTCERY and used the data to parameterize a model of the alpha-helical peptide-binding landscape for three members of the Bcl-2 family of proteins: Bcl-xL, Mcl-1, and Bfl-1. We applied optimization protocols to explore extremes in this landscape to discover peptides with desired interaction profiles. Computational design generated 36 peptides, all of which bound with high affinity and specificity to just one of Bcl-xL, Mcl-1, or Bfl-1, as intended. We designed additional peptides that bound selectively to two out of three of these proteins. The designed peptides were dissimilar to known Bcl-2–binding peptides, and high-resolution crystal structures confirmed that they engaged their targets as expected. Excellent results on this challenging problem demonstrate the power of a landscape modeling approach, and the designed peptides have potential uses as diagnostic tools or cancer therapeutics.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Organization:
National Science Foundation (NSF)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1513012
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Vol. 115, Issue 44; ISSN 0027-8424
Publisher:
National Academy of SciencesCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

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  • Hayretin, Yumerefendi,; Andrew, Leaver-Fay,; M., Jacobs, Timothy
  • The University of North Carolina at Chapel Hill University Libraries https://doi.org/10.17615/zq7n-bs80
text January 2015
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Cited By (4)

Predicting gene expression using morphological cell responses to nanotopography journal March 2020
Generating quantitative binding landscapes through fractional binding selections combined with deep sequencing and data normalization journal January 2020
Molecular evolution of peptides by yeast surface display technology journal January 2019
Beyond function: Engineering improved peptides for therapeutic applications journal September 2019