+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-10034 | |||||||||
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Title | Cryo-EM structure of Xenorhabdus nematophila XptA1 | |||||||||
Map data | Cryo-EM density map of Xenorhabdus nematophila XptA1 | |||||||||
Sample |
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Keywords | Toxin / membrane permeation / translocation / complex | |||||||||
Function / homology | Function and homology information | |||||||||
Biological species | Xenorhabdus nematophila (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.84 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_10034.map.gz | 18.6 MB | EMDB map data format | |
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Header (meta data) | emd-10034-v30.xml emd-10034.xml | 12.4 KB 12.4 KB | Display Display | EMDB header |
Images | emd_10034.png | 73.3 KB | ||
Filedesc metadata | emd-10034.cif.gz | 6.8 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-10034 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-10034 | HTTPS FTP |
-Validation report
Summary document | emd_10034_validation.pdf.gz | 232.8 KB | Display | EMDB validaton report |
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Full document | emd_10034_full_validation.pdf.gz | 232 KB | Display | |
Data in XML | emd_10034_validation.xml.gz | 7.1 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10034 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-10034 | HTTPS FTP |
-Related structure data
Related structure data | 6rw8MC 6rw6C 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_10034.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Cryo-EM density map of Xenorhabdus nematophila XptA1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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 : XptA1 pentamer
Entire | Name: XptA1 pentamer |
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Components |
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-Supramolecule #1: XptA1 pentamer
Supramolecule | Name: XptA1 pentamer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all |
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Source (natural) | Organism: Xenorhabdus nematophila (bacteria) |
Molecular weight | Theoretical: 1.4 MDa |
-Macromolecule #1: A component of insecticidal toxin complex (Tc)
Macromolecule | Name: A component of insecticidal toxin complex (Tc) / type: protein_or_peptide / ID: 1 / Number of copies: 5 / Enantiomer: LEVO |
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Source (natural) | Organism: Xenorhabdus nematophila (bacteria) |
Molecular weight | Theoretical: 287.120781 KDa |
Recombinant expression | Organism: Escherichia coli (E. coli) |
Sequence | String: MIKVNELLDK INRKRSGDTL LLTNISFMSF SEFRHRTSGT LTWRETDFLY QQAHQESKQN KLEELRILSR ANPQLANITN LNITPSTLN NSYNSWFYGR AHRFVKPGSI ASIFSPAAYL TELYREAKDF HPDNSQYHLN KRRPDIASLA LTQNNMDEEI S TLSLSNEL ...String: MIKVNELLDK INRKRSGDTL LLTNISFMSF SEFRHRTSGT LTWRETDFLY QQAHQESKQN KLEELRILSR ANPQLANITN LNITPSTLN NSYNSWFYGR AHRFVKPGSI ASIFSPAAYL TELYREAKDF HPDNSQYHLN KRRPDIASLA LTQNNMDEEI S TLSLSNEL LLHNIQTLEK TDYNGVMKML STYRQTGMTP YHLPYESARQ AILLQDKNLT AFSRNTDVAE LMDPTSLLAI KT DISPELY QILVEEITPE NSTELMKKNF GTDDVLIFKS YASLARYYDL SYDELSLFVN LSFGKKNTNQ QYKNEQLITL VND GNDTAT ARLIKRTRKD FYDSHLNYAE LIPIKENEYK YNFSVKKTEP DHLDFRLQNG DKEYIYQDKN FVPIANTHYS IPIK LTTEQ ITNGITLRLW RVKPNPSDAI NANAHFKMME FPGDIFLLKL NKAIRLYKAT GISPEDIWQV IESIYDDLTI DSNVL GKLF YVQYYMQHYN ISVSDALVLC HSDISQYSTK QQPSHFTMLF NTPLLNGQEF SADNTKLDLT PGESKNHFYL GIMKRA FRV NDTELYTLWK LANGGTNPEF MCSIENLSLL YRVRLLADIH HLTVNELSML LSVSPYVNTK IALFSDTALT QLISFLF QC TQWLTTQKWS VSDVFLMTTD NYSTVLTPDI ENLITTLSNG LSTLSLGDDE LIRAAAPLIA ASIQMDSAKT AETILLWI N QIKPQGLTFD DFMIIAANRD RSENETSNMV AFCQVLGQLS LIVRNIGLSE NELTLLVTKP EKFQSETTAL QHDLPTLQA LTRFHAVIMR CGSYATEILT ALELGALTAE QLAVALKFDA QVVTQALQQT DLGVNTFTNW RTIDVTLQWL DVAATLGITP DGVAALIKL KYVGEPETPM PTFDDWQAAS TLLQAGLNSQ QSDQLQAWLD EATTTAASAY YIKNGAPQQI KSRDELYSYL L IDNQVSAQ VKTTRVAEAI ASIQLYVNRA LNNVEGKVSK PVKTRQFFCD WETYNRRYST WAGVSELAYY PENYIDPTIR IG QTGMMNN LLQQLSQSQL NIDTVEDSFK NYLTAFEDVA NLQVISGYHD SINVNEGLTY LIGYSQTEPR IYYWRNVDHQ KCQ HGQFAA NAWGEWKKIE IPINVWQENI RPVIYKSRLY LLWLEQKELK NESEDGKIDI TDYILKLSHI RYDGSWSSPF NFNV TDKIE NLINKKASIG MYCSSDYEKD VIIVYFHEKK DNYSFNSLPA REGMTINPDM TLSILTENDL DAIVKSTLSE LDTRT EYKV NNQFATDYLA EYKESITTKN KLASFTGNIF DLSYISPGNG HINLTFNPSM EINFSKGNIY NDEVKYLLSM VEDETV ILF DYDRHDEMLG KEEEVFHYGT LDFIISIDLK NAEYFRVLMH LRTKEKIPRK SEIGVGINYD YESNDAEFKL DTNIVLD WK DNTGVWHTIC ESFTNDVSII NNMGNIAALF LREDPCVYLC SIATDIKIAS SMIEQIQDKN ISFLLKNGSD ILVELNAE D HVASKPSHES DPMVYDFNQV KVDIEGYDIP LVSEFIIKQP DGGYNDIVIE SPIHIKLKSK DTSNVISLHK MPSGTQYMQ IGPYRTRLNT LFSRKLAERA NIGIDNVLSM ETQNLPEPQL GEGFYATFKL PPYNKEEHGD ERWFKIHIGN IDGNSARQPY YEGMLSDIE TTVTLFVPYA KGYYIREGVR LGVGYKKIIY DKSWESAFFY FDETKNQFIF INDADHDSGM TQQGIVKNIK K YKGFIHVV VMKNNTEPMD FNGANAIYFW ELFYYTPMMV FQRLLQEQNF TESTRWLRYI WNPAGYSVQG EMQDYYWNVR PL EEDTSWN ANPLDSVDPD AVAQHDPMHY KVATFMKMLD LLITRGDSAY RQLERDTLNE AKMWYVQALT LLGDEPYFSL DND WSEPRL EEAASQTMRH HYQHKMLQLR QRAALPTKRT ANSLTALFLP QINKKLQGYW QTLTQRLYNL RHNLTIDGQP LSLS LYATP ADPSMLLSAA ITASQGGGDL PHAVMPMYRF PVILENAKWG VSQLIQFGNT LLSITERQDA EALAEILQTQ GSELA LQSI KMQDKVMAEI DADKLALQES RHGAQSRFDS FNTLYDEDVN AGEKQAMDLY LSSSVLSTSG TALHMAAAAA DLVPNI YGF AVGGSRFGAL FNASAIGIEI SASATRIAAD KISQSEIYRR RRQEWEIQRN NAEAEIKQID AQLATLAVRR EAAVLQK NY LETQQAQTQA QLAFLQSKFS NAALYNWLRG RLSAIYYQFY DLAVSLCLMA EQTYQYELNN AAAHFIKPGA WHGTYAGL L AGETLMLNLA QMEKSYLEKD ERALEVTRTV SLAEVYAGLT ENSFILKDKV TELVNAGEGS AGTTLNGLNV EGTQLQASL KLSDLNIATD YPDGLGNTRR IKQISVTLPA LLGPYQDVRA ILSYGGSTMM PRGCKAIAIS HGMNDSGQFQ MDFNDAKYLP FEGLPVADT GTLTLSFPGI SGKQKSLLLS LSDIILHIRY TIRS UniProtKB: A component of insecticidal toxin complex (Tc) |
-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 exposure time: 1.5 sec. / Average electron dose: 60.0 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: 2.84 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: SPHIRE / Number images used: 218992 |
Initial angle assignment | Type: OTHER / Software - Name: SPHIRE |
Final angle assignment | Type: OTHER / Software - Name: SPHIRE |