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Open data
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Basic information
| Entry | Database: EMDB / ID: EMD-22211 | |||||||||
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| Title | PmtCD ABC exporter at C1 symmetry | |||||||||
Map data | ||||||||||
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Keywords | ABC transporter / ABC exporter / Peptide transort / MEMBRANE PROTEIN | |||||||||
| Function / homology | Function and homology informationABC-type transporter activity / ATP hydrolysis activity / ATP binding / plasma membrane Similarity search - Function | |||||||||
| Biological species | ![]() | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 4.0 Å | |||||||||
Authors | Zeytuni N / Strynadka NJC / Hu J / Worrall LJ | |||||||||
| Funding support | Canada, 1 items
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Citation | Journal: Sci Adv / Year: 2020Title: Structural insight into the ATP-driven exporter of virulent peptide toxins. Authors: N Zeytuni / S W Dickey / J Hu / H T Chou / L J Worrall / J A N Alexander / M L Carlson / M Nosella / F Duong / Z Yu / M Otto / N C J Strynadka / ![]() Abstract: is a major human pathogen that has acquired alarming broad-spectrum antibiotic resistance. One group of secreted toxins with key roles during infection is the phenol-soluble modulins (PSMs). PSMs ... is a major human pathogen that has acquired alarming broad-spectrum antibiotic resistance. One group of secreted toxins with key roles during infection is the phenol-soluble modulins (PSMs). PSMs are amphipathic, membrane-destructive cytolytic peptides that are exported to the host-cell environment by a designated adenosine 5'-triphosphate (ATP)-binding cassette (ABC) transporter, the PSM transporter (PmtABCD). Here, we demonstrate that the minimal Pmt unit necessary for PSM export is PmtCD and provide its first atomic characterization by single-particle cryo-EM and x-ray crystallography. We have captured the transporter in the ATP-bound state at near atomic resolution, revealing a type II ABC exporter fold, with an additional cytosolic domain. Comparison to a lower-resolution nucleotide-free map displaying an "open" conformation and putative hydrophobic inner chamber of a size able to accommodate the binding of two PSM peptides provides mechanistic insight and sets the foundation for therapeutic design. | |||||||||
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Structure visualization
| Movie |
Movie viewer |
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| Structure viewer | EM map: SurfView Molmil Jmol/JSmol |
| Supplemental images |
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Downloads & links
-EMDB archive
| Map data | emd_22211.map.gz | 1.9 MB | EMDB map data format | |
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| Header (meta data) | emd-22211-v30.xml emd-22211.xml | 16.7 KB 16.7 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_22211_fsc.xml | 5.4 KB | Display | FSC data file |
| Images | emd_22211.png | 59.4 KB | ||
| Filedesc metadata | emd-22211.cif.gz | 6.5 KB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-22211 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-22211 | HTTPS FTP |
-Validation report
| Summary document | emd_22211_validation.pdf.gz | 427.8 KB | Display | EMDB validaton report |
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| Full document | emd_22211_full_validation.pdf.gz | 427.4 KB | Display | |
| Data in XML | emd_22211_validation.xml.gz | 8.4 KB | Display | |
| Data in CIF | emd_22211_validation.cif.gz | 10.7 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-22211 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-22211 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 6xjiMC ![]() 6u2dC ![]() 6xfuC ![]() 6xjhC C: citing same article ( M: atomic model generated by this map |
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| Similar structure data |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_22211.map.gz / Format: CCP4 / Size: 12.9 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: 1.31 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : PmtCD
| Entire | Name: PmtCD |
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| Components |
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-Supramolecule #1: PmtCD
| Supramolecule | Name: PmtCD / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2 / Details: PmtCD ABC exporter |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 120 KDa |
-Macromolecule #1: Phenol-soluble modulin export ABC transporter permease subunit PmtD
| Macromolecule | Name: Phenol-soluble modulin export ABC transporter permease subunit PmtD type: protein_or_peptide / ID: 1 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 30.488379 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MHHHHHHHHH HSSGLVPRGS HRILNLVKYD LYSIFKSPLT YLAILVVSSL IATQSILMAN SMDNPKHIIV YGSVFAAAKW LLLIIGLMF VVKTITRDFS QGTIQLYMSK VKTRVGYIIS KTISIILISI LFALIHYVIL IVVQASSNGK NLAFSKYVDN L WFFLIFLL ...String: MHHHHHHHHH HSSGLVPRGS HRILNLVKYD LYSIFKSPLT YLAILVVSSL IATQSILMAN SMDNPKHIIV YGSVFAAAKW LLLIIGLMF VVKTITRDFS QGTIQLYMSK VKTRVGYIIS KTISIILISI LFALIHYVIL IVVQASSNGK NLAFSKYVDN L WFFLIFLL FFGLFLFLIT LASQKTAMIF SLGVFLVLIV PFIKPFITFI PRYGEKVLDA FDYIPFAYLT DKMISSNFDF SN WQWVISL GSIVIFFILN ILYVAKKDI UniProtKB: Phenol-soluble modulin export ABC transporter permease subunit PmtD |
-Macromolecule #2: ABC transporter ATP-binding protein
| Macromolecule | Name: ABC transporter ATP-binding protein / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 33.001098 KDa |
| Recombinant expression | Organism: ![]() |
| Sequence | String: MKLEHITKKY GSNVVLNDID FDFGDSRIVG LIGKNGVGKT TVMKVMNGNI IKFDGKVDID NADNIGFLIE HPKLYDNKSG LYNLKLFAQ VLGKGFDKAY TDKIIDAFGM RPYIKKKVKK YSMGMKQKLA IAVSLMNKPK FLILDEPTNG MDPDGSIDVL T TIKSLVNE ...String: MKLEHITKKY GSNVVLNDID FDFGDSRIVG LIGKNGVGKT TVMKVMNGNI IKFDGKVDID NADNIGFLIE HPKLYDNKSG LYNLKLFAQ VLGKGFDKAY TDKIIDAFGM RPYIKKKVKK YSMGMKQKLA IAVSLMNKPK FLILDEPTNG MDPDGSIDVL T TIKSLVNE LDMRILISSH KLEDIELICD RAVFLRDGHF VQDVNMEEGV ASDTTIVTVD HKDFDRTEKY LAEHFQLQNV DK ADGHLMI NAQKNYQVIL KALSELDIYP KYIETRKSSL RDTYFNINQR GDK UniProtKB: ABC transporter ATP-binding protein |
-Macromolecule #3: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
| Macromolecule | Name: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / type: ligand / ID: 3 / Number of copies: 2 / Formula: AGS |
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| Molecular weight | Theoretical: 523.247 Da |
| Chemical component information | ![]() ChemComp-AGS: |
-Macromolecule #4: MAGNESIUM ION
| Macromolecule | Name: MAGNESIUM ION / type: ligand / ID: 4 / Number of copies: 2 / Formula: MG |
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| Molecular weight | Theoretical: 24.305 Da |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 1 mg/mL | |||||||||
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| Buffer | pH: 7.4 Component:
Details: Solution made fresh from concentrated stocks and filtered | |||||||||
| Grid | Model: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY | |||||||||
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK I |
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Electron microscopy
| Microscope | FEI TITAN KRIOS |
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| Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Average electron dose: 1.16 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Refinement | Protocol: AB INITIO MODEL |
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| Output model | ![]() PDB-6xji: |
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Keywords
Authors
Canada, 1 items
Citation
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