8ANJ

Structure of the amyloid-forming peptide DFINWL from human GLP-2

  • Classification: PROTEIN FIBRIL
  • Organism(s): Homo sapiens
  • Mutation(s): No 

  • Deposited: 2022-08-05 Released: 2023-08-02 
  • Deposition Author(s): Durvanger, Z.
  • Funding Organization(s): Hungarian National Research, Development and Innovation Office, European Regional Development Fund

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Polymorphic amyloid nanostructures of hormone peptides involved in glucose homeostasis display reversible amyloid formation.

Horvath, D.Durvanger, Z.K Menyhard, D.Sulyok-Eiler, M.Bencs, F.Gyulai, G.Horvath, P.Taricska, N.Perczel, A.

(2023) Nat Commun 14: 4621-4621

  • DOI: https://doi.org/10.1038/s41467-023-40294-x
  • Primary Citation of Related Structures:  
    8ANG, 8ANH, 8ANI, 8ANJ, 8ANK, 8ANL, 8ANM, 8ANN, 8ONQ

  • PubMed Abstract: 

    A large group of hormones are stored as amyloid fibrils in acidic secretion vesicles before they are released into the bloodstream and readopt their functional state. Here, we identify an evolutionarily conserved hexapeptide sequence as the major aggregation-prone region (APR) of gastrointestinal peptides of the glucagon family: xFxxWL. We determine nine polymorphic crystal structures of the APR segments of glucagon-like peptides 1 and 2, and exendin and its derivatives. We follow amyloid formation by CD, FTIR, ThT assays, and AFM. We propose that the pH-dependent changes of the protonation states of glutamate/aspartate residues of APRs initiate switching between the amyloid and the folded, monomeric forms of the hormones. We find that pH sensitivity diminishes in the absence of acidic gatekeepers and amyloid formation progresses over a broad pH range. Our results highlight the dual role of short aggregation core motifs in reversible amyloid formation and receptor binding.


  • Organizational Affiliation

    ELKH-ELTE Protein Modeling Research Group ELTE Eötvös Loránd University, Pázmány Péter sétány 1/A, Budapest, H-1117, Hungary.


Macromolecules

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Peptide DFINWL from human GLP-26Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01275 (Homo sapiens)
Explore P01275 
Go to UniProtKB:  P01275
PHAROS:  P01275
GTEx:  ENSG00000115263 
Entity Groups  
UniProt GroupP01275
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.174 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.169 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 21.78α = 90
b = 4.869β = 101.73
c = 21.936γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
CrysalisProdata reduction
CrysalisProdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Hungarian National Research, Development and Innovation OfficeHungary2018-1.2.1-NKP-2018-00005
European Regional Development FundEuropean UnionVEKOP-2.3.2-16-2017-00014, VEKOP-2.3.3-15-2017-00018
Hungarian National Research, Development and Innovation OfficeHungaryThematic Excellence Program Synth+

Revision History  (Full details and data files)

  • Version 1.0: 2023-08-02
    Type: Initial release
  • Version 1.1: 2023-08-09
    Changes: Database references
  • Version 1.2: 2024-06-19
    Changes: Data collection