[English] 日本語
Yorodumi
- PDB-9k0e: Cryo-EM structure of Amyloid-beta42-4b polymorph 2 -

+
Open data


ID or keywords:

Loading...

-
Basic information

Entry
Database: PDB / ID: 9k0e
TitleCryo-EM structure of Amyloid-beta42-4b polymorph 2
Components
  • Amyloid-beta A4 protein
  • Amyloid-beta protein 40
KeywordsMEMBRANE PROTEIN / helical fibril / amyloid-beta / PROTEIN FIBRIL
Function / homology
Function and homology information


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 / regulation of synapse structure or activity / axo-dendritic transport / regulation of Wnt signaling pathway ...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 / regulation of synapse structure or activity / axo-dendritic transport / regulation of Wnt signaling pathway / axon midline choice point recognition / astrocyte activation involved in immune response / 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 / Lysosome Vesicle Biogenesis / positive regulation of amyloid fibril formation / Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / astrocyte projection / neuron remodeling / Deregulated CDK5 triggers multiple neurodegenerative pathways in Alzheimer's disease models / nuclear envelope lumen / positive regulation of protein metabolic process / dendrite development / TRAF6 mediated NF-kB activation / modulation of excitatory postsynaptic potential / Advanced glycosylation endproduct receptor signaling / signaling receptor activator activity / The NLRP3 inflammasome / negative regulation of long-term synaptic potentiation / main axon / transition metal ion binding / regulation of multicellular organism growth / intracellular copper ion homeostasis / regulation of presynapse assembly / ECM proteoglycans / positive regulation of T cell migration / neuronal dense core vesicle / Purinergic signaling in leishmaniasis infection / positive regulation of chemokine production / cellular response to manganese ion / clathrin-coated pit / Notch signaling pathway / extracellular matrix organization / neuron projection maintenance / Mitochondrial protein degradation / astrocyte activation / ionotropic glutamate receptor signaling pathway / axonogenesis / response to interleukin-1 / positive regulation of mitotic cell cycle / positive regulation of calcium-mediated signaling / protein serine/threonine kinase binding / cellular response to copper ion / platelet alpha granule lumen / cellular response to cAMP / positive regulation of glycolytic process / adult locomotory behavior / central nervous system development / positive regulation of long-term synaptic potentiation / positive regulation of interleukin-1 beta production / trans-Golgi network membrane / endosome lumen / dendritic shaft / TAK1-dependent IKK and NF-kappa-B activation / learning / positive regulation of JNK cascade / Post-translational protein phosphorylation / locomotory behavior / microglial cell activation / serine-type endopeptidase inhibitor activity / regulation of long-term neuronal synaptic plasticity / positive regulation of non-canonical NF-kappaB signal transduction / synapse organization / cellular response to nerve growth factor stimulus / visual learning / recycling endosome / response to lead ion / positive regulation of interleukin-6 production / Golgi lumen / cognition / endocytosis / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of inflammatory response / cellular response to amyloid-beta / neuron projection development / positive regulation of tumor necrosis factor production / Platelet degranulation / heparin binding / regulation of gene expression / regulation of translation / growth cone / early endosome membrane / G alpha (i) signalling events / perikaryon / G alpha (q) signalling events
Similarity search - Function
Amyloidogenic glycoprotein, copper-binding / Amyloidogenic glycoprotein, copper-binding domain conserved site / Amyloidogenic glycoprotein, copper-binding domain superfamily / Copper-binding of amyloid precursor, CuBD / Amyloid precursor protein (APP) copper-binding (CuBD) domain signature. / Amyloidogenic glycoprotein, amyloid-beta peptide superfamily / Beta-amyloid peptide (beta-APP) / Amyloidogenic glycoprotein, amyloid-beta peptide / Beta-amyloid precursor protein C-terminal / Amyloidogenic glycoprotein, intracellular domain, conserved site ...Amyloidogenic glycoprotein, copper-binding / Amyloidogenic glycoprotein, copper-binding domain conserved site / Amyloidogenic glycoprotein, copper-binding domain superfamily / Copper-binding of amyloid precursor, CuBD / Amyloid precursor protein (APP) copper-binding (CuBD) domain signature. / Amyloidogenic glycoprotein, amyloid-beta peptide superfamily / Beta-amyloid peptide (beta-APP) / Amyloidogenic glycoprotein, amyloid-beta peptide / Beta-amyloid precursor protein C-terminal / Amyloidogenic glycoprotein, intracellular domain, conserved site / Beta-amyloid precursor protein C-terminus / Amyloid precursor protein (APP) intracellular domain signature. / Amyloidogenic glycoprotein, extracellular / Amyloidogenic glycoprotein, heparin-binding / Amyloidogenic glycoprotein, E2 domain / E2 domain superfamily / Amyloidogenic glycoprotein, heparin-binding domain superfamily / Amyloid A4 N-terminal heparin-binding / E2 domain of amyloid precursor protein / Amyloid precursor protein (APP) E1 domain profile. / Amyloid precursor protein (APP) E2 domain profile. / amyloid A4 / Amyloidogenic glycoprotein / Proteinase inhibitor I2, Kunitz, conserved site / Pancreatic trypsin inhibitor (Kunitz) family signature. / BPTI/Kunitz family of serine protease inhibitors. / Pancreatic trypsin inhibitor Kunitz domain / Kunitz/Bovine pancreatic trypsin inhibitor domain / Pancreatic trypsin inhibitor (Kunitz) family profile. / Pancreatic trypsin inhibitor Kunitz domain superfamily / PH-like domain superfamily
Similarity search - Domain/homology
Amyloid-beta precursor protein / Amyloid-beta precursor protein
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsXia, W.C. / Sun, Y.P. / Liu, C.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: Nat Commun / Year: 2025
Title: An O-glycopeptide participates in the formation of distinct Aβ fibril structures and attenuates Aβ neurotoxicity.
Authors: Qijia Wei / Dangliang Liu / Wencheng Xia / Fengzhang Wang / Lu Huang / Jun Zhang / Xiaoya Wang / Zhongxin Xu / Changdong He / Wenzhe Li / Xiaomeng Shi / Chu Wang / Yuan Liu / Cong Liu / Suwei Dong /
Abstract: The self-assembly of biomolecules through noncovalent interactions is critical in both physiological and pathological processes, as exemplified by the assembly of amyloid β peptide (Aβ) into ...The self-assembly of biomolecules through noncovalent interactions is critical in both physiological and pathological processes, as exemplified by the assembly of amyloid β peptide (Aβ) into oligomers or fibrils in Alzheimer's disease (AD). Developing molecules that can modulate this assembly process holds significant mechanistic and therapeutic potential. In this study, we identified glycopeptides as a class of protein aggregation modulators, showing that β-N-acetylgalactosamine (β-GalNAc)-modified Aβ promotes Aβ fibrillation while reducing its toxic oligomers. Using biochemical assays, cryo-EM, and molecular dynamics simulations, we demonstrated that β-GalNAc-modified Aβ coassembles with Aβ, forming unique fibril structures stabilized by both hydrophobic interactions and an organized hydrogen bond network facilitated by the glycopeptide. Importantly, β-GalNAc-modified Aβ can alleviate the neurotoxicity of Aβ in neuronal cells and an AD male mouse model. These findings underscore the potential of glycopeptides in regulating amyloid aggregation and provide structural insights for designing molecules targeting amyloid-related pathologies.
History
DepositionOct 15, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Aug 6, 2025Provider: repository / Type: Initial release

-
Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

-
Assembly

Deposited unit
G: Amyloid-beta A4 protein
F: Amyloid-beta protein 40
B: Amyloid-beta A4 protein
A: Amyloid-beta protein 40
N: Amyloid-beta A4 protein
L: Amyloid-beta protein 40
H: Amyloid-beta A4 protein
D: Amyloid-beta protein 40
O: Amyloid-beta A4 protein
M: Amyloid-beta protein 40
I: Amyloid-beta A4 protein
E: Amyloid-beta protein 40


Theoretical massNumber of molelcules
Total (without water)36,58712
Polymers36,58712
Non-polymers00
Water1086
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

-
Components

#1: Protein/peptide
Amyloid-beta A4 protein


Mass: 4520.087 Da / Num. of mol.: 6 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) / References: UniProt: B4DMD5
#2: Protein/peptide
Amyloid-beta protein 40 / Abeta40 / Beta-APP40


Mass: 1577.802 Da / Num. of mol.: 6 / Source method: obtained synthetically / Source: (synth.) Homo sapiens (human) / References: UniProt: P05067
#3: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 6 / Source method: isolated from a natural source / Formula: H2O
Has protein modificationN

-
Experimental details

-
Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: FILAMENT / 3D reconstruction method: helical reconstruction

-
Sample preparation

ComponentName: Cryo-EM structure of Amyloid-beta42-4b polymorph 2 / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1-#2 / Source: NATURAL
Source (natural)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

-
Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 55 e/Å2 / Film or detector model: GATAN K3 BIOCONTINUUM (6k x 4k)

-
Processing

EM softwareName: PHENIX / Version: 1.15.2_3472: / Category: model refinement
CTF correctionType: NONE
Helical symmertyAngular rotation/subunit: 179.66 ° / Axial rise/subunit: 2.42 Å / Axial symmetry: C1
3D reconstructionResolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 62839 / Symmetry type: HELICAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.0061914
ELECTRON MICROSCOPYf_angle_d0.6442562
ELECTRON MICROSCOPYf_dihedral_angle_d12.8511080
ELECTRON MICROSCOPYf_chiral_restr0.056300
ELECTRON MICROSCOPYf_plane_restr0.003318

+
About Yorodumi

-
News

-
Feb 9, 2022. New format data for meta-information of EMDB entries

New format data for meta-information of EMDB entries

  • Version 3 of the EMDB header file is now the official format.
  • The previous official version 1.9 will be removed from the archive.

Related info.:EMDB header

External links:wwPDB to switch to version 3 of the EMDB data model

-
Aug 12, 2020. Covid-19 info

Covid-19 info

URL: https://pdbj.org/emnavi/covid19.php

New page: Covid-19 featured information page in EM Navigator.

Related info.:Covid-19 info / Mar 5, 2020. Novel coronavirus structure data

+
Mar 5, 2020. Novel coronavirus structure data

Novel coronavirus structure data

Related info.:Yorodumi Speices / Aug 12, 2020. Covid-19 info

External links:COVID-19 featured content - PDBj / Molecule of the Month (242)：Coronavirus Proteases

+
Jan 31, 2019. EMDB accession codes are about to change! (news from PDBe EMDB page)

EMDB accession codes are about to change! (news from PDBe EMDB page)

  • The allocation of 4 digits for EMDB accession codes will soon come to an end. Whilst these codes will remain in use, new EMDB accession codes will include an additional digit and will expand incrementally as the available range of codes is exhausted. The current 4-digit format prefixed with “EMD-” (i.e. EMD-XXXX) will advance to a 5-digit format (i.e. EMD-XXXXX), and so on. It is currently estimated that the 4-digit codes will be depleted around Spring 2019, at which point the 5-digit format will come into force.
  • The EM Navigator/Yorodumi systems omit the EMD- prefix.

Related info.:Q: What is EMD? / ID/Accession-code notation in Yorodumi/EM Navigator

External links:EMDB Accession Codes are Changing Soon! / Contact to PDBj

+
Jul 12, 2017. Major update of PDB

Major update of PDB

  • wwPDB released updated PDB data conforming to the new PDBx/mmCIF dictionary.
  • This is a major update changing the version number from 4 to 5, and with Remediation, in which all the entries are updated.
  • In this update, many items about electron microscopy experimental information are reorganized (e.g. em_software).
  • Now, EM Navigator and Yorodumi are based on the updated data.

External links:wwPDB Remediation / Enriched Model Files Conforming to OneDep Data Standards Now Available in the PDB FTP Archive

-
Yorodumi

Thousand views of thousand structures

  • Yorodumi is a browser for structure data from EMDB, PDB, SASBDB, etc.
  • This page is also the successor to EM Navigator detail page, and also detail information page/front-end page for Omokage search.
  • The word "yorodu" (or yorozu) is an old Japanese word meaning "ten thousand". "mi" (miru) is to see.

Related info.:EMDB / PDB / SASBDB / Comparison of 3 databanks / Yorodumi Search / Aug 31, 2016. New EM Navigator & Yorodumi / Yorodumi Papers / Jmol/JSmol / Function and homology information / Changes in new EM Navigator and Yorodumi

Read more