+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-21877 | |||||||||
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Title | ATG9A stateA monomer map | |||||||||
Map data | ||||||||||
Sample |
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Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.9 Å | |||||||||
Authors | Guardia CM / Tan X / Lian T | |||||||||
Citation | Journal: Cell Rep / Year: 2020 Title: Structure of Human ATG9A, the Only Transmembrane Protein of the Core Autophagy Machinery. Authors: Carlos M Guardia / Xiao-Feng Tan / Tengfei Lian / Mitra S Rana / Wenchang Zhou / Eric T Christenson / Augustus J Lowry / José D Faraldo-Gómez / Juan S Bonifacino / Jiansen Jiang / Anirban Banerjee / Abstract: Autophagy is a catabolic process involving capture of cytoplasmic materials into double-membraned autophagosomes that subsequently fuse with lysosomes for degradation of the materials by lysosomal ...Autophagy is a catabolic process involving capture of cytoplasmic materials into double-membraned autophagosomes that subsequently fuse with lysosomes for degradation of the materials by lysosomal hydrolases. One of the least understood components of the autophagy machinery is the transmembrane protein ATG9. Here, we report a cryoelectron microscopy structure of the human ATG9A isoform at 2.9-Å resolution. The structure reveals a fold with a homotrimeric domain-swapped architecture, multiple membrane spans, and a network of branched cavities, consistent with ATG9A being a membrane transporter. Mutational analyses support a role for the cavities in the function of ATG9A. In addition, structure-guided molecular simulations predict that ATG9A causes membrane bending, explaining the localization of this protein to small vesicles and highly curved edges of growing autophagosomes. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_21877.map.gz | 1004.9 KB | EMDB map data format | |
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Header (meta data) | emd-21877-v30.xml emd-21877.xml | 8.2 KB 8.2 KB | Display Display | EMDB header |
Images | emd_21877.png | 184.2 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-21877 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-21877 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_21877.map.gz / Format: CCP4 / Size: 27 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : Autophagy Related 9A with LMNG
Entire | Name: Autophagy Related 9A with LMNG |
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Components |
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-Supramolecule #1: Autophagy Related 9A with LMNG
Supramolecule | Name: Autophagy Related 9A with LMNG / type: complex / ID: 1 / Parent: 0 |
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Source (natural) | Organism: Homo sapiens (human) |
Recombinant expression | Organism: Homo sapiens (human) |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 8 |
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Grid | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 57.0 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
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Final angle assignment | Type: MAXIMUM LIKELIHOOD |
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 290672 |