Porous framework formed by assembly of a bipyridyl-conjugated helical peptide

Experimental Data Snapshot

  • Resolution: 1.04 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report

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Noncovalent Peptide Assembly Enables Crystalline, Permutable, and Reactive Thiol Frameworks.

Hess, S.S.Coppola, F.Dang, V.T.Tran, P.N.Mickel, P.J.Oktawiec, J.Ren, Z.Kral, P.Nguyen, A.I.

(2023) J Am Chem Soc 145: 19588-19600

  • DOI: https://doi.org/10.1021/jacs.3c03645
  • Primary Citation of Related Structures:  
    8GB9, 8GBA, 8GBH, 8GBI, 8GBM, 8GBO, 8GD6, 8GD8, 8GIV, 8GJ7, 8GK1, 8GK2, 8GK9, 8GKB, 8GKX, 8GL0, 8GL4, 8GL5, 8SW2, 8SY4

  • PubMed Abstract: 

    Though thiols are exceptionally versatile, their high reactivity has also hindered the synthesis and characterization of well-defined thiol-containing porous materials. Leveraging the mild conditions of the noncovalent peptide assembly, we readily synthesized and characterized a number of frameworks with thiols displayed at many unique positions and in several permutations. Importantly, nearly all assemblies were structurally determined using single-crystal X-ray diffraction to reveal their rich sequence-structure landscape and the cooperative noncovalent interactions underlying their assembly. These observations and supporting molecular dynamics calculations enabled rational engineering by the positive and negative design of noncovalent interactions. Furthermore, the thiol-containing frameworks undergo diverse single-crystal-to-single-crystal reactions, including toxic metal ion coordination (e.g., Cd 2+ , Pb 2+ , and Hg 2+ ), selective uptake of Hg 2+ ions, and redox transformations. Notably, we find a framework that supports thiol-nitrosothiol interconversion, which is applicable for biocompatible nitric oxide delivery. The modularity, ease of synthesis, functionality, and well-defined nature of these peptide-based thiol frameworks are expected to accelerate the design of complex materials with reactive active sites.

  • Organizational Affiliation

    Department of Chemistry, University of Illinois Chicago, Chicago, Illinois 60607, United States.


Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
11synthetic constructMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Sequence Annotations
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Resolution: 1.04 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.208 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 8.791α = 89.99
b = 16.592β = 89.97
c = 51.15γ = 90.011
Software Package:
Software NamePurpose
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Other private--

Revision History  (Full details and data files)

  • Version 1.0: 2023-11-15
    Type: Initial release