+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-10033 | |||||||||
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Title | Cryo-EM structure of Photorhabdus luminescens TcdA1 | |||||||||
Map data | Cryo-EM density map of Photorhabdus luminescens TcdA1 | |||||||||
Sample |
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Keywords | Toxin / membrane permeation / translocation / complex | |||||||||
Function / homology | Function and homology information | |||||||||
Biological species | Photorhabdus luminescens (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.75 Å | |||||||||
Authors | Roderer D / Leidreiter F | |||||||||
Funding support | Germany, 1 items
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Citation | Journal: Sci Adv / Year: 2019 Title: Common architecture of Tc toxins from human and insect pathogenic bacteria. Authors: F Leidreiter / D Roderer / D Meusch / C Gatsogiannis / R Benz / S Raunser / Abstract: Tc toxins use a syringe-like mechanism to penetrate the membrane and translocate toxic enzymes into the host cytosol. They are composed of three components: TcA, TcB, and TcC. Low-resolution ...Tc toxins use a syringe-like mechanism to penetrate the membrane and translocate toxic enzymes into the host cytosol. They are composed of three components: TcA, TcB, and TcC. Low-resolution structures of TcAs from different bacteria suggest a considerable difference in their architecture and possibly in their mechanism of action. Here, we present high-resolution structures of five TcAs from insect and human pathogens, which show a similar overall composition and domain organization. Essential structural features, including a trefoil protein knot, are present in all TcAs, suggesting a common mechanism of action. All TcAs form functional pores and can be combined with TcB-TcC subunits from other species to form active chimeric holotoxins. We identified a conserved ionic pair that stabilizes the shell, likely operating as a strong latch that only springs open after destabilization of other regions. Our results provide new insights into the architecture and mechanism of the Tc toxin family. | |||||||||
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_10033.map.gz | 22.1 MB | EMDB map data format | |
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Header (meta data) | emd-10033-v30.xml emd-10033.xml | 12.6 KB 12.6 KB | Display Display | EMDB header |
Images | emd_10033.png | 69.3 KB | ||
Filedesc metadata | emd-10033.cif.gz | 6.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-10033 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-10033 | HTTPS FTP |
-Validation report
Summary document | emd_10033_validation.pdf.gz | 189.3 KB | Display | EMDB validaton report |
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Full document | emd_10033_full_validation.pdf.gz | 188.9 KB | Display | |
Data in XML | emd_10033_validation.xml.gz | 503 B | Display | |
Data in CIF | emd_10033_validation.cif.gz | 375 B | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10033 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10033 | HTTPS FTP |
-Related structure data
Related structure data | 6rw6MC 6rw8C 6rw9C 6rwaC 6rwbC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_10033.map.gz / Format: CCP4 / Size: 216 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Cryo-EM density map of Photorhabdus luminescens TcdA1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.14 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 : TcdA1 pentamer
Entire | Name: TcdA1 pentamer |
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Components |
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-Supramolecule #1: TcdA1 pentamer
Supramolecule | Name: TcdA1 pentamer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Photorhabdus luminescens (bacteria) |
Molecular weight | Theoretical: 1.4 MDa |
-Macromolecule #1: TcdA1
Macromolecule | Name: TcdA1 / type: protein_or_peptide / ID: 1 / Number of copies: 5 / Enantiomer: LEVO |
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Source (natural) | Organism: Photorhabdus luminescens (bacteria) |
Molecular weight | Theoretical: 283.229406 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MNESVKEIPD VLKSQCGFNC LTDISHSSFN EFRQQVSEHL SWSETHDLYH DAQQAQKDNR LYEARILKRA NPQLQNAVHL AILAPNAEL IGYNNQFSGR ASQYVAPGTV SSMFSPAAYL TELYREARNL HASDSVYYLD TRRPDLKSMA LSQQNMDIEL S TLSLSNEL ...String: MNESVKEIPD VLKSQCGFNC LTDISHSSFN EFRQQVSEHL SWSETHDLYH DAQQAQKDNR LYEARILKRA NPQLQNAVHL AILAPNAEL IGYNNQFSGR ASQYVAPGTV SSMFSPAAYL TELYREARNL HASDSVYYLD TRRPDLKSMA LSQQNMDIEL S TLSLSNEL LLESIKTESK LENYTKVMEM LSTFRPSGAT PYHDAYENVR EVIQLQDPGL EQLNASPAIA GLMHQASLLG IN ASISPEL FNILTEEITE GNAEELYKKN FGNIEPASLA MPEYLKRYYN LSDEELSQFI GKASNFGQQE YSNNQLITPV VNS SDGTVK VYRITREYTT NAYQMDVELF PFGGENYRLD YKFKNFYNAS YLSIKLNDKR ELVRTEGAPQ VNIEYSANIT LNTA DISQP FEIGLTRVLP SGSWAYAAAK FTVEEYNQYS FLLKLNKAIR LSRATELSPT ILEGIVRSVN LQLDINTDVL GKVFL TKYY MQRYAIHAET ALILCNAPIS QRSYDNQPSQ FDRLFNTPLL NGQYFSTGDE EIDLNSGSTG DWRKTILKRA FNIDDV SLF RLLKITDHDN KDGKIKNNLK NLSNLYIGKL LADIHQLTID ELDLLLIAVG EGKTNLSAIS DKQLATLIRK LNTITSW LH TQKWSVFQLF IMTSTSYNKT LTPEIKNLLD TVYHGLQGFD KDKADLLHVM APYIAATLQL SSENVAHSVL LWADKLQP G DGAMTAEKFW DWLNTKYTPG SSEAVETQEH IVQYCQALAQ LEMVYHSTGI NENAFRLFVT KPEMFGAATG AAPAHDALS LIMLTRFADW VNALGEKASS VLAAFEANSL TAEQLADAMN LDANLLLQAS IQAQNHQHLP PVTPENAFSC WTSINTILQW VNVAQQLNV APQGVSALVG LDYIQSMKET PTYAQWENAA GVLTAGLNSQ QANTLHAFLD ESRSAALSTY YIRQVAKAAA A IKSRDDLY QYLLIDNQVS AAIKTTRIAE AIASIQLYVN RALENVEENA NSGVISRQFF IDWDKYNKRY STWAGVSQLV YY PENYIDP TMRIGQTKMM DALLQSVSQS QLNADTVEDA FMSYLTSFEQ VANLKVISAY HDNINNDQGL TYFIGLSETD AGE YYWRSV DHSKFNDGKF AANAWSEWHK IDCPINPYKS TIRPVIYKSR LYLLWLEQKE ITKQTGNSKD GYQTETDYRY ELKL AHIRY DGTWNTPITF DVNKKISELK LEKNRAPGLY CAGYQGEDTL LVMFYNQQDT LDSYKNASMQ GLYIFADMAS KDMTP EQSN VYRDNSYQQF DTNNVRRVNN RYAEDYEIPS SVSSRKDYGW GDYYLSMVYN GDIPTINYKA ASSDLKIYIS PKLRII HNG YEGQKRNQCN LMNKYGKLGD KFIVYTSLGV NPNNSSNKLM FYPVYQYSGN TSGLNQGRLL FHRDTTYPSK VEAWIPG AK RSLTNQNAAI GDDYATDSLN KPDDLKQYIF MTDSKGTATD VSGPVEINTA ISPAKVQIIV KAGGKEQTFT ADKDVSIQ P SPSFDEMNYQ FNALEIDGSG LNFINNSASI DVTFTAFAED GRKLGYESFS IPVTLKVSTD NALTLHHNEN GAQYMQWQS YRTRLNTLFA RQLVARATTG IDTILSMETQ NIQEPQLGKG FYATFVIPPY NLSTHGDERW FKLYIKHVVD NNSHIIYSGQ LTDTNINIT LFIPLDDVPL NQDYHAKVYM TFKKSPSDGT WWGPHFVRDD KGIVTINPKS ILTHFESVNV LNNISSEPMD F SGANSLYF WELFYYTPML VAQRLLHEQN FDEANRWLKY VWSPSGYIVH GQIQNYQWNV RPLLEDTSWN SDPLDSVDPD AV AQHDPMH YKVSTFMRTL DLLIARGDHA YRQLERDTLN EAKMWYMQAL HLLGDKPYLP LSTTWSDPRL DRAADITTQN AHD SAIVAL RQNIPTPAPL SLRSANTLTD LFLPQINEVM MNYWQTLAQR VYNLRHNLSI DGQPLYLPIY ATPADPKALL SAAV ATSQG GGKLPESFMS LWRFPHMLEN ARGMVSQLTQ FGSTLQNIIE RQDAEALNAL LQNQAAELIL TNLSIQDKTI EELDA EKTV LEKSKAGAQS RFDSYGKLYD ENINAGENQA MTLRASAAGL TTAVQASRLA GAAADLVPNI FGFAGGGSRW GAIAEA TGY VMEFSANVMN TEADKISQSE TYRRRRQEWE IQRNNAEAEL KQIDAQLKSL AVRREAAVLQ KTSLKTQQEQ TQSQLAF LQ RKFSNQALYN WLRGRLAAIY FQFYDLAVAR CLMAEQAYRW ELNDDSARFI KPGAWQGTYA GLLAGETLML SLAQMEDA H LKRDKRALEV ERTVSLAEVY AGLPKDNGPF SLAQEIDKLV SQGSGSAGSG NNNLAFGAGT DTKTSLQASV SFADLKIRE DYPASLGKIR RIKQISVTLP ALLGPYQDVQ AILSYGDKAG LANGCEALAV SHGMNDSGQF QLDFNDGKFL PFEGIAIDQG TLTLSFPNA SMPEKGKQAT MLKTLNDIIL HIRYTIK UniProtKB: TcdA1 |
-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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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 100.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: EMDB MAP |
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Final reconstruction | Applied symmetry - Point group: C5 (5 fold cyclic) / Resolution.type: BY AUTHOR / Resolution: 2.75 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: SPHIRE / Number images used: 436273 |
Initial angle assignment | Type: OTHER / Software - Name: SPHIRE |
Final angle assignment | Type: OTHER / Software - Name: SPHIRE |