+Open data
-Basic information
Entry | Database: PDB / ID: 5gaq | |||||||||
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Title | Cryo-EM structure of the Lysenin Pore | |||||||||
Components | Lysenin | |||||||||
Keywords | TOXIN / Pore forming protein / aerolysin | |||||||||
Function / homology | Function and homology information other organism cell membrane / monoatomic ion transport / toxin activity / killing of cells of another organism / defense response to bacterium / extracellular region / membrane Similarity search - Function | |||||||||
Biological species | Eisenia fetida (common brandling worm) | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.1 Å | |||||||||
Authors | Savva, C.G. / Bokori-Brown, M. / Martin, T.G. / Titball, R.W. / Naylor, C.E. / Basak, A.K. | |||||||||
Funding support | United Kingdom, 2items
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Citation | Journal: Nat Commun / Year: 2016 Title: Cryo-EM structure of lysenin pore elucidates membrane insertion by an aerolysin family protein. Authors: Monika Bokori-Brown / Thomas G Martin / Claire E Naylor / Ajit K Basak / Richard W Titball / Christos G Savva / Abstract: Lysenin from the coelomic fluid of the earthworm Eisenia fetida belongs to the aerolysin family of small β-pore-forming toxins (β-PFTs), some members of which are pathogenic to humans and animals. ...Lysenin from the coelomic fluid of the earthworm Eisenia fetida belongs to the aerolysin family of small β-pore-forming toxins (β-PFTs), some members of which are pathogenic to humans and animals. Despite efforts, a high-resolution structure of a channel for this family of proteins has been elusive and therefore the mechanism of activation and membrane insertion remains unclear. Here we determine the pore structure of lysenin by single particle cryo-EM, to 3.1 Å resolution. The nonameric assembly reveals a long β-barrel channel spanning the length of the complex that, unexpectedly, includes the two pre-insertion strands flanking the hypothetical membrane-insertion loop. Examination of other members of the aerolysin family reveals high structural preservation in this region, indicating that the membrane-insertion pathway in this family is conserved. For some toxins, proteolytic activation and pro-peptide removal will facilitate unfolding of the pre-insertion strands, allowing them to form the β-barrel of the channel. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 5gaq.cif.gz | 504.2 KB | Display | PDBx/mmCIF format |
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PDB format | pdb5gaq.ent.gz | 418.6 KB | Display | PDB format |
PDBx/mmJSON format | 5gaq.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 5gaq_validation.pdf.gz | 731.5 KB | Display | wwPDB validaton report |
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Full document | 5gaq_full_validation.pdf.gz | 736.4 KB | Display | |
Data in XML | 5gaq_validation.xml.gz | 64.4 KB | Display | |
Data in CIF | 5gaq_validation.cif.gz | 89.4 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/ga/5gaq ftp://data.pdbj.org/pub/pdb/validation_reports/ga/5gaq | HTTPS FTP |
-Related structure data
Related structure data | 8015MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
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Noncrystallographic symmetry (NCS) | NCS domain:
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