Lasso Peptide Benenodin‑1 Is a Thermally Actuated [1]Rotaxane Switch

Mechanically interlocked molecules that change their conformation in response to stimuli have been developed by synthetic chemists as building blocks for molecular machines. Here we describe a natural product, the lasso peptide benenodin-1, which exhibits conformational switching between two distinc...

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Published inJournal of the American Chemical Society Vol. 139; no. 30; pp. 10403 - 10409
Main Authors Zong, Chuhan, Wu, Michelle J, Qin, Jason Z, Link, A. James
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 02.08.2017
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Abstract Mechanically interlocked molecules that change their conformation in response to stimuli have been developed by synthetic chemists as building blocks for molecular machines. Here we describe a natural product, the lasso peptide benenodin-1, which exhibits conformational switching between two distinct threaded conformers upon actuation by heat. We have determined the structures of both conformers and have characterized the kinetics and energetics of the conformational switch. Single amino acid substitutions to benenodin-1 generate peptides that are biased to a single conformer, showing that the switching behavior is potentially an evolvable trait in these peptides. Lasso peptides such as benenodin-1 can be recognized and cleaved by enzymes called lasso peptide isopeptidases. We show that only the native conformer of benenodin-1 is cleaved by its cognate isopeptidase. Thus, thermally induced conformational switching of benenodin-1 may also be relevant to the biological function of these molecules.
AbstractList Mechanically interlocked molecules that change their conformation in response to stimuli have been developed by synthetic chemists as building blocks for molecular machines. Here we describe a natural product, the lasso peptide benenodin-1, which exhibits conformational switching between two distinct threaded conformers upon actuation by heat. We have determined the structures of both conformers and have characterized the kinetics and energetics of the conformational switch. Single amino acid substitutions to benenodin-1 generate peptides that are biased to a single conformer, showing that the switching behavior is potentially an evolvable trait in these peptides. Lasso peptides such as benenodin-1 can be recognized and cleaved by enzymes called lasso peptide isopeptidases. We show that only the native conformer of benenodin-1 is cleaved by its cognate isopeptidase. Thus, thermally induced conformational switching of benenodin-1 may also be relevant to the biological function of these molecules.
Mechanically interlocked molecules that change their conformation in response to stimuli have been developed by synthetic chemists as building blocks for molecular machines. Here we describe a natural product, the lasso peptide benenodin-1, which exhibits conformational switching between two distinct threaded conformers upon actuation by heat. We have determined the structures of both conformers and have characterized the kinetics and energetics of the conformational switch. Single amino acid substitutions to benenodin-1 generate peptides that are biased to a single conformer, showing that the switching behavior is potentially an evolvable trait in these peptides. Lasso peptides such as benenodin-1 can be recognized and cleaved by enzymes called lasso peptide isopeptidases. We show that only the native conformer of benenodin-1 is cleaved by its cognate isopeptidase. Thus thermally-induced conformational switching of benenodin-1 may also be relevant to the biological function of these molecules. Authors are required to submit a graphic entry for the Table of Contents (TOC) that, in conjunction with the manuscript title, should give the reader a representative idea of one of the following: A key structure, reaction, equation, concept, or theorem, etc., that is discussed in the manuscript. Consult the journal’s Instructions for Authors for TOC graphic specifications.
Author Zong, Chuhan
Link, A. James
Wu, Michelle J
Qin, Jason Z
AuthorAffiliation Department of Chemistry
Department of Molecular Biology
Department of Chemical and Biological Engineering
AuthorAffiliation_xml – name: Department of Molecular Biology
– name: Department of Chemistry
– name: Department of Chemical and Biological Engineering
– name: 2 Department of Molecular Biology, Princeton University, Princeton, NJ 08544
– name: 1 Department of Chemistry, Princeton University, Princeton, NJ 08544
– name: 3 Department of Chemical and Biological Engineering, Princeton University, Princeton, NJ 08544
Author_xml – sequence: 1
  givenname: Chuhan
  surname: Zong
  fullname: Zong, Chuhan
– sequence: 2
  givenname: Michelle J
  orcidid: 0000-0003-1734-7994
  surname: Wu
  fullname: Wu, Michelle J
– sequence: 3
  givenname: Jason Z
  surname: Qin
  fullname: Qin, Jason Z
– sequence: 4
  givenname: A. James
  orcidid: 0000-0001-5066-9691
  surname: Link
  fullname: Link, A. James
  email: ajlink@princeton.edu
BackLink https://www.ncbi.nlm.nih.gov/pubmed/28696674$$D View this record in MEDLINE/PubMed
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Snippet Mechanically interlocked molecules that change their conformation in response to stimuli have been developed by synthetic chemists as building blocks for...
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SubjectTerms amino acid substitution
Caulobacteraceae - chemistry
enzymes
heat
Kinetics
peptides
Peptides - chemistry
Peptides - genetics
Protein Conformation
Rotaxanes - chemistry
Temperature
Title Lasso Peptide Benenodin‑1 Is a Thermally Actuated [1]Rotaxane Switch
URI http://dx.doi.org/10.1021/jacs.7b04830
https://www.ncbi.nlm.nih.gov/pubmed/28696674
https://www.proquest.com/docview/2116871649
https://pubmed.ncbi.nlm.nih.gov/PMC5576865
Volume 139
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