2N1E

MAX1 peptide fibril


Experimental Data Snapshot

  • Method: SOLID-STATE NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Molecular structure of monomorphic peptide fibrils within a kinetically trapped hydrogel network.

Nagy-Smith, K.Moore, E.Schneider, J.Tycko, R.

(2015) Proc.Natl.Acad.Sci.USA 112: 9816-9821

  • DOI: 10.1073/pnas.1509313112

  • PubMed Abstract: 
  • Most, if not all, peptide- and protein-based hydrogels formed by self-assembly can be characterized as kinetically trapped 3D networks of fibrils. The propensity of disease-associated amyloid-forming peptides and proteins to assemble into polymorphic ...

    Most, if not all, peptide- and protein-based hydrogels formed by self-assembly can be characterized as kinetically trapped 3D networks of fibrils. The propensity of disease-associated amyloid-forming peptides and proteins to assemble into polymorphic fibrils suggests that cross-β fibrils comprising hydrogels may also be polymorphic. We use solid-state NMR to determine the molecular and supramolecular structure of MAX1, a de novo designed gel-forming peptide, in its fibrillar state. We find that MAX1 adopts a β-hairpin conformation and self-assembles with high fidelity into a double-layered cross-β structure. Hairpins assemble with an in-register Syn orientation within each β-sheet layer and with an Anti orientation between layers. Surprisingly, although the MAX1 fibril network is kinetically trapped, solid-state NMR data show that fibrils within this network are monomorphic and most likely represent the thermodynamic ground state. Intermolecular interactions not available in alternative structural arrangements apparently dictate this monomorphic behavior.


    Organizational Affiliation

    Chemical Biology Laboratory, Frederick National Laboratory for Cancer Research, National Cancer Institute, Frederick, MD 21702; Department of Chemistry and Biochemistry, University of Delaware, Newark, DE 19716;




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MAX1 peptide
A, B, C, D, E, F, G, H
21N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
A, B, C, D, E, F, G, H
NON-POLYMERH2 N

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DPR
Query on DPR
A, B, C, D, E, F, G, H
D-PEPTIDE LINKINGC5 H9 N O2

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Experimental Data & Validation

Experimental Data

  • Method: SOLID-STATE NMR
  • Conformers Calculated: 20 
  • Conformers Submitted: 20 
  • Selection Criteria: all calculated structures submitted 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-07-29
    Type: Initial release
  • Version 1.1: 2015-08-12
    Type: Database references
  • Version 1.2: 2015-08-26
    Type: Database references