7NSL

AL amyloid fibril from a lambda 1 light chain


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 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

Role of mutations and post-translational modifications in systemic AL amyloidosis studied by cryo-EM.

Radamaker, L.Karimi-Farsijani, S.Andreotti, G.Baur, J.Neumann, M.Schreiner, S.Berghaus, N.Motika, R.Haupt, C.Walther, P.Schmidt, V.Huhn, S.Hegenbart, U.Schonland, S.O.Wiese, S.Read, C.Schmidt, M.Fandrich, M.

(2021) Nat Commun 12: 6434-6434

  • DOI: 10.1038/s41467-021-26553-9
  • Primary Citation of Related Structures:  
    7NSL

  • PubMed Abstract: 
  • Systemic AL amyloidosis is a rare disease that is caused by the misfolding of immunoglobulin light chains (LCs). Potential drivers of amyloid formation in this disease are post-translational modifications (PTMs) and the mutational changes that are inserted into the LCs by somatic hypermutation ...

    Systemic AL amyloidosis is a rare disease that is caused by the misfolding of immunoglobulin light chains (LCs). Potential drivers of amyloid formation in this disease are post-translational modifications (PTMs) and the mutational changes that are inserted into the LCs by somatic hypermutation. Here we present the cryo electron microscopy (cryo-EM) structure of an ex vivo λ1-AL amyloid fibril whose deposits disrupt the ordered cardiomyocyte structure in the heart. The fibril protein contains six mutational changes compared to the germ line and three PTMs (disulfide bond, N-glycosylation and pyroglutamylation). Our data imply that the disulfide bond, glycosylation and mutational changes contribute to determining the fibril protein fold and help to generate a fibril morphology that is able to withstand proteolytic degradation inside the body.


    Organizational Affiliation

    Institute of Protein Biochemistry, Ulm University, 89081, Ulm, Germany. marcus.faendrich@uni-ulm.de.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Amyloid lambda1 light chainF [auth A], E [auth B], D [auth C], A [auth D], B [auth E], C [auth F], G118Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.10 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)GermanyFOR2969

Revision History  (Full details and data files)

  • Version 1.0: 2021-11-24
    Type: Initial release