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Yorodumi- EMDB-13910: Cryo-EM structure of Tn4430 TnpA transposase from Tn3 family in a... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-13910 | |||||||||||||||
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Title | Cryo-EM structure of Tn4430 TnpA transposase from Tn3 family in apo state | |||||||||||||||
Map data | sharpened cryoSPARC map | |||||||||||||||
Sample |
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Keywords | DNA transposition / Tn3 family / antibiotic resistance / protein metamorphosis / RECOMBINATION | |||||||||||||||
Function / homology | Tn3 transposase DDE domain / Domain of unknown function DUF4158 / : / Tn3 transposase DDE domain / Domain of unknown function (DUF4158) / transposase activity / DNA transposition / DNA binding / Transposase for transposon Tn4430 Function and homology information | |||||||||||||||
Biological species | Bacillus thuringiensis (bacteria) | |||||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||||||||
Authors | Shkumatov AV / Oger CA / Aryanpour N / Hallet BF / Efremov RG | |||||||||||||||
Funding support | Belgium, 4 items
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Citation | Journal: Nat Commun / Year: 2022 Title: Structural insight into Tn3 family transposition mechanism. Authors: Alexander V Shkumatov / Nicolas Aryanpour / Cédric A Oger / Gérôme Goossens / Bernard F Hallet / Rouslan G Efremov / Abstract: Transposons are diverse mobile genetic elements that play the critical role as genome architects in all domains of life. Tn3 is a widespread family and among the first identified bacterial ...Transposons are diverse mobile genetic elements that play the critical role as genome architects in all domains of life. Tn3 is a widespread family and among the first identified bacterial transposons famed for their contribution to the dissemination of antibiotic resistance. Transposition within this family is mediated by a large TnpA transposase, which facilitates both transposition and target immunity. Howtever, a structural framework required for understanding the mechanism of TnpA transposition is lacking. Here, we describe the cryo-EM structures of TnpA from Tn4430 in the apo form and paired with transposon ends before and after DNA cleavage and strand transfer. We show that TnpA has an unusual architecture and exhibits a family specific regulatory mechanism involving metamorphic refolding of the RNase H-like catalytic domain. The TnpA structure, constrained by a double dimerization interface, creates a peculiar topology that suggests a specific role for the target DNA in transpososome assembly and activation. | |||||||||||||||
History |
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-Structure visualization
Supplemental images |
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-Downloads & links
-EMDB archive
Map data | emd_13910.map.gz | 28.8 MB | EMDB map data format | |
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Header (meta data) | emd-13910-v30.xml emd-13910.xml | 19.5 KB 19.5 KB | Display Display | EMDB header |
FSC (resolution estimation) | emd_13910_fsc.xml | 7.1 KB | Display | FSC data file |
Images | emd_13910.png | 82.4 KB | ||
Masks | emd_13910_msk_1.map | 30.5 MB | Mask map | |
Filedesc metadata | emd-13910.cif.gz | 6.6 KB | ||
Others | emd_13910_half_map_1.map.gz emd_13910_half_map_2.map.gz | 28.2 MB 28.2 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-13910 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-13910 | HTTPS FTP |
-Validation report
Summary document | emd_13910_validation.pdf.gz | 737.1 KB | Display | EMDB validaton report |
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Full document | emd_13910_full_validation.pdf.gz | 736.7 KB | Display | |
Data in XML | emd_13910_validation.xml.gz | 12.9 KB | Display | |
Data in CIF | emd_13910_validation.cif.gz | 17.6 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13910 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-13910 | HTTPS FTP |
-Related structure data
Related structure data | 7qd8MC 7qd4C 7qd5C 7qd6C 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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-Map
File | Download / File: emd_13910.map.gz / Format: CCP4 / Size: 30.5 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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Annotation | sharpened cryoSPARC map | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.6005 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
File | emd_13910_msk_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: half map 1
File | emd_13910_half_map_1.map | ||||||||||||
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Annotation | half map 1 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: half map 2
File | emd_13910_half_map_2.map | ||||||||||||
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Annotation | half map 2 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
-Entire : TnpA transposase in apo state
Entire | Name: TnpA transposase in apo state |
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Components |
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-Supramolecule #1: TnpA transposase in apo state
Supramolecule | Name: TnpA transposase in apo state / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Bacillus thuringiensis (bacteria) |
-Macromolecule #1: Transposase for transposon Tn4430
Macromolecule | Name: Transposase for transposon Tn4430 / type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: Bacillus thuringiensis (bacteria) |
Molecular weight | Theoretical: 116.922008 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MGVKQLLSEA QRNELMDLSR LTEWDLVTFH TFSKHDLHLI LKHRRGYNRL GFALQLVLIR YPGWSLTEYK DIPQYVVAYV ASQLQIPPE EFLVYAKRGN TLWEHLGEIR TEYGYQNFSS EYKETLLQFL VQQAMDNNNT LYLIEITIST LRKMKVILPA M YVIEDIVW ...String: MGVKQLLSEA QRNELMDLSR LTEWDLVTFH TFSKHDLHLI LKHRRGYNRL GFALQLVLIR YPGWSLTEYK DIPQYVVAYV ASQLQIPPE EFLVYAKRGN TLWEHLGEIR TEYGYQNFSS EYKETLLQFL VQQAMDNNNT LYLIEITIST LRKMKVILPA M YVIEDIVW EAKQQADQKV YSILHDGLVQ EQKDQLDALL LPTINGKSPL AWLKDVPAQP SPESFLKVID RLQFVQKIGL TI DTTKINT NRLRQLARLG SKYEPYAFRR FNEVKRYSML VSFLLEITQD LIDYAIEIHD RLMMNLQTKG KKEQDEIQQA NGK KLNEKI LQFITVCGTL IEAKETGKDA FAALDEVMSW NEMVESVEEA KQLSRPLNYD YLDLLNTRYS YVRRYAPTLL RSLH FRATK SGEPVLQALD TIHELNETGK RKVPHGAPLH FVSNRWQKHV YDDDGNINRH YYELAALTEL RNHIRSGDIF VSGSR HHKA FDDYLIPYDE WNEVSNIPNG LTAPLKAEDY ITDRINRLNE HLEWLSKNSE KLEGVDISQG KLHVERLDRG TPEEAK AFS KLLHSMLPRI KLTDLLIEVA SWTGFHDQFI HASTNQSPDQ EEQNIVLATL MAMGTNIGLT KMAEATPGIS YRQMANA SQ WRMYDDAMVR AQSILVNFQK EQKLSSYWGD GTTSSSDGMR LSIAVRSLHA DSNPHYGTGK GGTIYRFVSD QLSAYHVK V ITTNARDALH VLDGLLHHET DLKIEEHYTD TAGYTDQVFA LTHLLGFRFA PRIRDLADTK LFSIPGGEEY ENVQALLKG KINVKLIKEN YEDIRRLAYS VQTGKVSSAL IMGKLGSYAR QNKLATALGE MGRIEKTLFT LDYISNKAVR RRVQKGLNKG EAINALARI IFFGQRGEFR ERALQDQLQR ASALNIIINA ISVWNTVYME KAVEELKARG EFREDLMPYA WPLGWEHINF L GEYKFEGL HDTGQMNLRP LRIKEPFYSP IRSFLEQKLI SEEDLNSAVD HHHHHH UniProtKB: Transposase for transposon Tn4430 |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 0.15 mg/mL |
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Buffer | pH: 7.5 / Details: 50 mM HEPES (pH 7.5), 100 mM NaCl, 30 mM L-Arg HCL |
Grid | Model: Quantifoil R2/1 / Material: COPPER / Support film - Material: CARBON / Support film - topology: HOLEY ARRAY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR |
Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-40 / Number grids imaged: 1 / Number real images: 3724 / Average exposure time: 10.0 sec. / 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: 5.3 µm / Nominal defocus min: 0.6 µm |
Sample stage | Specimen holder model: JEOL CRYOSPECPORTER / Cooling holder cryogen: NITROGEN |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
+Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: AB INITIO MODEL / Overall B value: 159 |
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Output model | PDB-7qd8: |