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Yorodumi- PDB-9m5r: ES-type (short pitch) amyloid fibril (40) of Tottori (D7N) mutant -
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Basic information
| Entry | Database: PDB / ID: 9m5r | ||||||
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| Title | ES-type (short pitch) amyloid fibril (40) of Tottori (D7N) mutant | ||||||
Components | Amyloid-beta protein 40 | ||||||
Keywords | PROTEIN FIBRIL / Amyloid | ||||||
| Function / homology | Function and homology informationamyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / growth cone filopodium / microglia development / collateral sprouting in absence of injury / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / regulation of Wnt signaling pathway / hippocampal neuron apoptotic process ...amyloid-beta complex / growth cone lamellipodium / cellular response to norepinephrine stimulus / growth cone filopodium / microglia development / collateral sprouting in absence of injury / Formyl peptide receptors bind formyl peptides and many other ligands / axo-dendritic transport / regulation of Wnt signaling pathway / hippocampal neuron apoptotic process / axon midline choice point recognition / astrocyte activation involved in immune response / regulation of synapse structure or activity / NMDA selective glutamate receptor signaling pathway / regulation of spontaneous synaptic transmission / mating behavior / growth factor receptor binding / peptidase activator activity / Golgi-associated vesicle / PTB domain binding / positive regulation of amyloid fibril formation / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / astrocyte projection / Lysosome Vesicle Biogenesis / neuron remodeling / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / dendrite development / positive regulation of protein metabolic process / TRAF6 mediated NF-kB activation / negative regulation of long-term synaptic potentiation / signaling receptor activator activity / Advanced glycosylation endproduct receptor signaling / transition metal ion binding / The NLRP3 inflammasome / main axon / modulation of excitatory postsynaptic potential / regulation of multicellular organism growth / intracellular copper ion homeostasis / ECM proteoglycans / regulation of presynapse assembly / positive regulation of T cell migration / response to insulin-like growth factor stimulus / neuronal dense core vesicle / Purinergic signaling in leishmaniasis infection / positive regulation of chemokine production / cellular response to manganese ion / Notch signaling pathway / swimming behavior / extracellular matrix organization / neuron projection maintenance / clathrin-coated pit / astrocyte activation / positive regulation of mitotic cell cycle / ionotropic glutamate receptor signaling pathway / axonogenesis / positive regulation of calcium-mediated signaling / Mitochondrial protein degradation / platelet alpha granule lumen / response to interleukin-1 / regulation of neuron apoptotic process / cellular response to copper ion / cellular response to cAMP / positive regulation of glycolytic process / endosome lumen / dendritic shaft / protein serine/threonine kinase binding / positive regulation of long-term synaptic potentiation / central nervous system development / trans-Golgi network membrane / positive regulation of interleukin-1 beta production / learning / adult locomotory behavior / Post-translational protein phosphorylation / serine-type endopeptidase inhibitor activity / locomotory behavior / microglial cell activation / positive regulation of non-canonical NF-kappaB signal transduction / cellular response to nerve growth factor stimulus / TAK1-dependent IKK and NF-kappa-B activation / synapse organization / regulation of long-term neuronal synaptic plasticity / visual learning / recycling endosome / positive regulation of JNK cascade / positive regulation of interleukin-6 production / response to lead ion / Golgi lumen / cognition / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / endocytosis / cellular response to amyloid-beta / neuron projection development / positive regulation of inflammatory response / positive regulation of tumor necrosis factor production / calcium ion transport / Platelet degranulation / regulation of translation / heparin binding / regulation of gene expression Similarity search - Function | ||||||
| Biological species | Homo sapiens (human) | ||||||
| Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.6 Å | ||||||
Authors | Burton-Smith, R.N. / Murata, K. | ||||||
| Funding support | Japan, 1items
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Citation | Journal: ACS Chem Neurosci / Year: 2025Title: Microgravity-Assisted Exploration of the Conformational Space of Amyloid β Affected by Tottori-Type Familial Mutation D7N. Authors: Maho Yagi-Utsumi / Saeko Yanaka / Raymond N Burton-Smith / Chihong Song / Christian Ganser / Chiaki Yamazaki / Haruo Kasahara / Toru Shimazu / Takayuki Uchihashi / Kazuyoshi Murata / Koichi Kato / ![]() Abstract: The amyloid β (Aβ) Tottori variant (D7N) exhibits unique aggregation behaviors and altered fibril formation, posing challenges for structural characterization. To overcome this, the microgravity ...The amyloid β (Aβ) Tottori variant (D7N) exhibits unique aggregation behaviors and altered fibril formation, posing challenges for structural characterization. To overcome this, the microgravity environment on the International Space Station was employed to study Tottori-type Aβ40 fibril formation and structure. Under Earth gravity, Tottori-type Aβ40 primarily formed nonfibrillar aggregates, hindering detailed structural analysis. In contrast, microgravity significantly enhanced fibril formation and minimized amorphous aggregates. Cryo-electron microscopy revealed two structurally distinct fibril types, each comprising different protomer conformations. In both types, the N-terminal segment was disordered and nor resolved in the density maps. The D7N mutation disrupts the protection of the core by the N-terminal segment often observed in wild-type Aβ40 fibrils, enhancing the hydrophobicity-mediated aggregation propensity. However, microgravity suppressed kinetic traps and facilitated high-quality fibril formation suitable for structural studies that can explore the free energy landscape of Aβ fibril formation. These findings demonstrate the utility of microgravity for studying familial Aβ variants and potentially accelerate our understanding of Aβ aggregation mechanisms in Alzheimer's disease. | ||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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| PDBx/mmCIF format | 9m5r.cif.gz | 1.5 MB | Display | PDBx/mmCIF format |
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| PDB format | pdb9m5r.ent.gz | Display | PDB format | |
| PDBx/mmJSON format | 9m5r.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/m5/9m5r ftp://data.pdbj.org/pub/pdb/validation_reports/m5/9m5r | HTTPS FTP |
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-Related structure data
| Related structure data | ![]() 63648MC ![]() 9m5pC ![]() 9m5qC ![]() 9umhC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Assembly
| Deposited unit | ![]()
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| Noncrystallographic symmetry (NCS) | NCS oper:
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About Yorodumi



Homo sapiens (human)
Japan, 1items
Citation






PDBj














