6Z1I

AL amyloid fibril from a lambda 3 light chain in conformation B


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Cryo-EM reveals structural breaks in a patient-derived amyloid fibril from systemic AL amyloidosis.

Radamaker, L.Baur, J.Huhn, S.Haupt, C.Hegenbart, U.Schonland, S.Bansal, A.Schmidt, M.Fandrich, M.

(2021) Nat Commun 12: 875-875

  • DOI: https://doi.org/10.1038/s41467-021-21126-2
  • Primary Citation of Related Structures:  
    6Z1I, 6Z1O

  • PubMed Abstract: 

    Systemic AL amyloidosis is a debilitating and potentially fatal disease that arises from the misfolding and fibrillation of immunoglobulin light chains (LCs). The disease is patient-specific with essentially each patient possessing a unique LC sequence. In this study, we present two ex vivo fibril structures of a λ3 LC. The fibrils were extracted from the explanted heart of a patient (FOR005) and consist of 115-residue fibril proteins, mainly from the LC variable domain. The fibril structures imply that a 180° rotation around the disulfide bond and a major unfolding step are necessary for fibrils to form. The two fibril structures show highly similar fibril protein folds, differing in only a 12-residue segment. Remarkably, the two structures do not represent separate fibril morphologies, as they can co-exist at different z-axial positions within the same fibril. Our data imply the presence of structural breaks at the interface of the two structural forms.


  • Organizational Affiliation

    Institute of Protein Biochemistry, Ulm University, Ulm, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
lambda 3 light chain fragment, residues 2-11681Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P01714 (Homo sapiens)
Explore P01714 
Go to UniProtKB:  P01714
PHAROS:  P01714
GTEx:  ENSG00000211663 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01714
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 
EM Software:
TaskSoftware PackageVersion
MODEL REFINEMENTPHENIX1.16
RECONSTRUCTIONRELION2.1.0

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyFOR2969

Revision History  (Full details and data files)

  • Version 1.0: 2021-02-24
    Type: Initial release