Andrew Chang / Xinyu Xiang / Jing Wang / Carolyn Lee / Tamta Arakhamia / Marija Simjanoska / Chi Wang / Yari Carlomagno / Guoan Zhang / Shikhar Dhingra / Manon Thierry / Jolien Perneel / Bavo Heeman / Lauren M Forgrave / Michael DeTure / Mari L DeMarco / Casey N Cook / Rosa Rademakers / Dennis W Dickson / Leonard Petrucelli / Michael H B Stowell / Ian R A Mackenzie / Anthony W P Fitzpatrick /
PubMed Abstract
Misfolding and aggregation of disease-specific proteins, resulting in the formation of filamentous cellular inclusions, is a hallmark of neurodegenerative disease with characteristic filament ...Misfolding and aggregation of disease-specific proteins, resulting in the formation of filamentous cellular inclusions, is a hallmark of neurodegenerative disease with characteristic filament structures, or conformers, defining each proteinopathy. Here we show that a previously unsolved amyloid fibril composed of a 135 amino acid C-terminal fragment of TMEM106B is a common finding in distinct human neurodegenerative diseases, including cases characterized by abnormal aggregation of TDP-43, tau, or α-synuclein protein. A combination of cryoelectron microscopy and mass spectrometry was used to solve the structures of TMEM106B fibrils at a resolution of 2.7 Å from postmortem human brain tissue afflicted with frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP, n = 8), progressive supranuclear palsy (PSP, n = 2), or dementia with Lewy bodies (DLB, n = 1). The commonality of abundant amyloid fibrils composed of TMEM106B, a lysosomal/endosomal protein, to a broad range of debilitating human disorders indicates a shared fibrillization pathway that may initiate or accelerate neurodegeneration.
EMDB-26268, PDB-7u0z: High-resolution map of tau filament from progressive supranuclear palsy (PSP) case 1 Method: EM (helical sym.) / Resolution: 4.2 Å
EMDB-26274, PDB-7u11: TMEM106B(120-254) protofilament from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 1) Method: EM (helical sym.) / Resolution: 3.2 Å
EMDB-26275, PDB-7u12: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 2) Method: EM (helical sym.) / Resolution: 3.5 Å
EMDB-26276, PDB-7u13: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 4) Method: EM (helical sym.) / Resolution: 2.9 Å
EMDB-26277, PDB-7u14: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type C (case 8) Method: EM (helical sym.) / Resolution: 4.5 Å
EMDB-26278, PDB-7u15: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type B case 2 (case 7). PDB-7u17: TMEM106B(120-254) T185S singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type B case 2 (case 7). Method: EM (helical sym.) / Resolution: 3.0 Å
EMDB-26279, PDB-7u16: TMEM106B(120-254) protofilament from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (all cases combined). PDB-7u18: TMEM106B(120-254) T185S protofilament from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (all cases combined). Method: EM (helical sym.) / Resolution: 2.7 Å
EMDB-26281: TMEM106B(120-254) singlet amyloid fibril from dementia with Lewy bodies (DLB). Method: EM (helical sym.) / Resolution: 7.6 Å
EMDB-26282: TMEM106B(120-254) doublet amyloid fibril from dementia with Lewy bodies (DLB). Method: EM (helical sym.) / Resolution: 8.8 Å
EMDB-26283: Low-resolution map of tau filament from progressive supranuclear palsy (PSP) case 3. Method: EM (helical sym.) / Resolution: 23.0 Å
EMDB-26284: TMEM106B(120-254) singlet amyloid fibril from progressive supranuclear palsy (PSP) case 1. Method: EM (helical sym.) / Resolution: 4.4 Å
EMDB-26285: TMEM106B(120-254) singlet amyloid fibril from progressive supranuclear palsy (PSP) case 2. Method: EM (helical sym.) / Resolution: 3.6 Å
EMDB-26286: TMEM106B(120-254) doublet amyloid fibril from progressive supranuclear palsy (PSP) case 2. Method: EM (helical sym.) / Resolution: 3.6 Å
EMDB-26287: TMEM106B(120-254) doublet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type C (case 8). Method: EM (helical sym.) / Resolution: 4.4 Å
EMDB-26288: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type B (case 6). Method: EM (helical sym.) / Resolution: 7.2 Å
EMDB-26289: TMEM106B(120-254) doublet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 5). Method: EM (helical sym.) / Resolution: 6.9 Å
EMDB-26290: TMEM106B(120-254) doublet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 4). Method: EM (helical sym.) / Resolution: 2.8 Å
EMDB-26291: TMEM106B(120-254) doublet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 3). Method: EM (helical sym.) / Resolution: 7.0 Å
EMDB-26292: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 3). Method: EM (helical sym.) / Resolution: 4.5 Å
EMDB-26293: TMEM106B(120-254) doublet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 2). Method: EM (helical sym.) / Resolution: 4.3 Å
EMDB-26294: TMEM106B(120-254) doublet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 1). Method: EM (helical sym.) / Resolution: 3.1 Å
EMDB-26295: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (case 1). Method: EM (helical sym.) / Resolution: 3.4 Å
EMDB-26296: TMEM106B(120-254) singlet amyloid fibril from frontotemporal lobar degeneration with TDP-43 pathology (FTLD-TDP) type A (all cases combined). Method: EM (helical sym.) / Resolution: 3.0 Å
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