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Yorodumi- EMDB-38428: Cryo-EM structure of the Ycf2-FtsHi motor complex from Arabidopsi... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-38428 | |||||||||
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Title | Cryo-EM structure of the Ycf2-FtsHi motor complex from Arabidopsis in Apo state | |||||||||
Map data | ||||||||||
Sample |
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Keywords | ATP-motor / Ycf2 / FtsHi / MEMBRANE PROTEIN | |||||||||
Function / homology | Function and homology information regulation of photorespiration / chloroplast protein-transporting ATPase activity / Ycf2/FtsHi complex / plastid stroma / plastid fission / protein import into chloroplast stroma / chloroplast inner membrane / stromule / chloroplast fission / chloroplast membrane ...regulation of photorespiration / chloroplast protein-transporting ATPase activity / Ycf2/FtsHi complex / plastid stroma / plastid fission / protein import into chloroplast stroma / chloroplast inner membrane / stromule / chloroplast fission / chloroplast membrane / chloroplast organization / malate dehydrogenase / embryo development ending in seed dormancy / L-malate dehydrogenase (NAD+) activity / malate metabolic process / plasmodesma / apoplast / plant-type vacuole / chloroplast envelope / Hydrolases; Acting on peptide bonds (peptidases); Metalloendopeptidases / plastid / chloroplast stroma / ATP-dependent peptidase activity / chloroplast thylakoid membrane / tricarboxylic acid cycle / response to cold / cell redox homeostasis / chloroplast / metalloendopeptidase activity / defense response to bacterium / ATP hydrolysis activity / mitochondrion / proteolysis / ATP binding / metal ion binding / plasma membrane / cytosol Similarity search - Function | |||||||||
Biological species | Arabidopsis thaliana (thale cress) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | |||||||||
Authors | Liang K / Zhan X / Xu Q / Wu J / Yan Z | |||||||||
Funding support | China, 1 items
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Citation | Journal: Cell / Year: 2024 Title: Structural insights into the chloroplast protein import in land plants. Authors: Ke Liang / Zeyu Jin / Xiechao Zhan / Yuxin Li / Qikui Xu / Yanqiu Xie / Yi Yang / Shaojie Wang / Jianping Wu / Zhen Yan / Abstract: Chloroplast proteins are imported via the translocon at the outer chloroplast membrane (TOC)-translocon at the inner chloroplast membrane (TIC) supercomplex, driven by an ATPase motor. The Ycf2-FtsHi ...Chloroplast proteins are imported via the translocon at the outer chloroplast membrane (TOC)-translocon at the inner chloroplast membrane (TIC) supercomplex, driven by an ATPase motor. The Ycf2-FtsHi complex has been identified as the chloroplast import motor. However, its assembly and cooperation with the TIC complex during preprotein translocation remain unclear. Here, we present the structures of the Ycf2-FtsHi and TIC complexes from Arabidopsis and an ultracomplex formed between them from Pisum. The Ycf2-FtsHi structure reveals a heterohexameric AAA+ ATPase motor module with characteristic features. Four previously uncharacterized components of Ycf2-FtsHi were identified, which aid in complex assembly and anchoring of the motor module at a tilted angle relative to the membrane. When considering the structures of the TIC complex and the TIC-Ycf2-FtsHi ultracomplex together, it becomes evident that the tilted motor module of Ycf2-FtsHi enables its close contact with the TIC complex, thereby facilitating efficient preprotein translocation. Our study provides valuable structural insights into the chloroplast protein import process in land plants. | |||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_38428.map.gz | 168 MB | EMDB map data format | |
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Header (meta data) | emd-38428-v30.xml emd-38428.xml | 35.5 KB 35.5 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_38428_fsc.xml | 11.9 KB | Display | FSC data file |
Images | emd_38428.png | 56.7 KB | ||
Filedesc metadata | emd-38428.cif.gz | 11.7 KB | ||
Others | emd_38428_half_map_1.map.gz emd_38428_half_map_2.map.gz | 165.4 MB 165.4 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-38428 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-38428 | HTTPS FTP |
-Validation report
Summary document | emd_38428_validation.pdf.gz | 837.3 KB | Display | EMDB validaton report |
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Full document | emd_38428_full_validation.pdf.gz | 836.8 KB | Display | |
Data in XML | emd_38428_validation.xml.gz | 20.8 KB | Display | |
Data in CIF | emd_38428_validation.cif.gz | 26.9 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-38428 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-38428 | HTTPS FTP |
-Related structure data
Related structure data | 8xkvMC 8xkuC C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_38428.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.087 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Half map: #2
File | emd_38428_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_38428_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Sample components
+Entire : The Ycf2-FtsHi motor complex from Arabidopsis
+Supramolecule #1: The Ycf2-FtsHi motor complex from Arabidopsis
+Macromolecule #1: Probable inactive ATP-dependent zinc metalloprotease FTSHI 4, chl...
+Macromolecule #2: ATP-dependent zinc metalloprotease FTSH 12, chloroplastic
+Macromolecule #3: Probable inactive ATP-dependent zinc metalloprotease FTSHI 5, chl...
+Macromolecule #4: Protein Ycf2
+Macromolecule #5: Probable inactive ATP-dependent zinc metalloprotease FTSHI 1, chl...
+Macromolecule #6: Probable inactive ATP-dependent zinc metalloprotease FTSHI 2, chl...
+Macromolecule #7: AtTam46
+Macromolecule #8: At4g28210
+Macromolecule #9: Malate dehydrogenase, chloroplastic
+Macromolecule #10: Aspartyl/glutamyl-tRNA (Asn/Gln) amidotransferase subunit B
+Macromolecule #11: UNK
+Macromolecule #12: UNK
+Macromolecule #13: UNK
+Macromolecule #14: UNK
+Macromolecule #15: UNK
+Macromolecule #16: Embryo defective 2737
+Macromolecule #17: ZINC ION
+Macromolecule #18: 1,2-DILAUROYL-SN-GLYCERO-3-PHOSPHATE
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.4000000000000001 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |