[English] 日本語
![](img/lk-miru.gif)
- PDB-6jq0: CryoEM structure of Abo1 Walker B (E372Q) mutant hexamer - ATP complex -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 6jq0 | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | CryoEM structure of Abo1 Walker B (E372Q) mutant hexamer - ATP complex | ||||||||||||||||||
![]() |
| ||||||||||||||||||
![]() | CHAPERONE / AAA+ ATPase Histone chaperone | ||||||||||||||||||
Function / homology | ![]() ATP-dependent H3-H4 histone complex chaperone activity / Hydrolases; Acting on acid anhydrides; In phosphorus-containing anhydrides / transcription initiation-coupled chromatin remodeling / nucleosome assembly / histone binding / chromatin binding / chromatin / ATP hydrolysis activity / positive regulation of transcription by RNA polymerase II / ATP binding / nucleus Similarity search - Function | ||||||||||||||||||
Biological species | ![]() ![]() ![]() ![]() | ||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.54 Å | ||||||||||||||||||
![]() | Cho, C. / Jang, J. / Song, J.J. | ||||||||||||||||||
Funding support | ![]()
| ||||||||||||||||||
![]() | ![]() Title: Structural basis of nucleosome assembly by the Abo1 AAA+ ATPase histone chaperone. Authors: Carol Cho / Juwon Jang / Yujin Kang / Hiroki Watanabe / Takayuki Uchihashi / Seung Joong Kim / Koichi Kato / Ja Yil Lee / Ji-Joon Song / ![]() ![]() Abstract: The fundamental unit of chromatin, the nucleosome, is an intricate structure that requires histone chaperones for assembly. ATAD2 AAA+ ATPases are a family of histone chaperones that regulate ...The fundamental unit of chromatin, the nucleosome, is an intricate structure that requires histone chaperones for assembly. ATAD2 AAA+ ATPases are a family of histone chaperones that regulate nucleosome density and chromatin dynamics. Here, we demonstrate that the fission yeast ATAD2 homolog, Abo1, deposits histone H3-H4 onto DNA in an ATP-hydrolysis-dependent manner by in vitro reconstitution and single-tethered DNA curtain assays. We present cryo-EM structures of an ATAD2 family ATPase to atomic resolution in three different nucleotide states, revealing unique structural features required for histone loading on DNA, and directly visualize the transitions of Abo1 from an asymmetric spiral (ATP-state) to a symmetric ring (ADP- and apo-states) using high-speed atomic force microscopy (HS-AFM). Furthermore, we find that the acidic pore of ATP-Abo1 binds a peptide substrate which is suggestive of a histone tail. Based on these results, we propose a model whereby Abo1 facilitates H3-H4 loading by utilizing ATP. | ||||||||||||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 656.5 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 513.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.3 MB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 89.2 KB | Display | |
Data in CIF | ![]() | 134.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 9872MC ![]() 0800C ![]() 9870C ![]() 9871C ![]() 6jpqC ![]() 6jpuC C: citing same article ( M: map data used to model this data |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
#1: Protein | Mass: 136226.453 Da / Num. of mol.: 6 / Mutation: E372Q Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: SPAC31G5.19 / Production host: ![]() ![]() #2: Protein/peptide | | Mass: 1209.482 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() #3: Chemical | ChemComp-ADP / | #4: Chemical | ChemComp-ATP / Has ligand of interest | N | |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: Abo1 / Type: COMPLEX / Entity ID: #2 / Source: RECOMBINANT |
---|---|
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() ![]() |
Buffer solution | pH: 7.5 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 1 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k) |
-
Processing
Software | Name: PHENIX / Version: 1.14_3260: / Classification: refinement |
---|---|
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION |
Symmetry | Point symmetry: C1 (asymmetric) |
3D reconstruction | Resolution: 3.54 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 99421 / Symmetry type: POINT |