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Open data
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Basic information
| Entry | Database: PDB / ID: 6s5t | ||||||||||||
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| Title | Legionella pneumophila SidJ-Human calmodulin complex | ||||||||||||
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Keywords | TRANSFERASE / Bacterial glutamylase / pseudo kinase / calmodulin-dependent / Legionella / SidJ / SdeA / serine ubiquitination | ||||||||||||
| Function / homology | Function and homology informationprotein-glutamic acid ligase activity, initiating / protein-glutamic acid ligase activity, elongating / Ligases / transporter inhibitor activity / negative regulation of ryanodine-sensitive calcium-release channel activity / negative regulation of calcium ion export across plasma membrane / presynaptic endocytosis / regulation of cell communication by electrical coupling involved in cardiac conduction / calcineurin-mediated signaling / adenylate cyclase binding ...protein-glutamic acid ligase activity, initiating / protein-glutamic acid ligase activity, elongating / Ligases / transporter inhibitor activity / negative regulation of ryanodine-sensitive calcium-release channel activity / negative regulation of calcium ion export across plasma membrane / presynaptic endocytosis / regulation of cell communication by electrical coupling involved in cardiac conduction / calcineurin-mediated signaling / adenylate cyclase binding / protein phosphatase activator activity / detection of calcium ion / catalytic complex / regulation of cardiac muscle contraction / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / calcium channel inhibitor activity / presynaptic cytosol / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / titin binding / sperm midpiece / regulation of calcium-mediated signaling / voltage-gated potassium channel complex / calcium channel complex / cysteine-type peptidase activity / substantia nigra development / regulation of heart rate / calyx of Held / adenylate cyclase activator activity / sarcomere / protein serine/threonine kinase activator activity / regulation of cytokinesis / spindle microtubule / calcium channel regulator activity / response to calcium ion / G2/M transition of mitotic cell cycle / long-term synaptic potentiation / spindle pole / calcium-dependent protein binding / myelin sheath / transferase activity / vesicle / transmembrane transporter binding / G protein-coupled receptor signaling pathway / nucleotide binding / calcium ion binding / centrosome / protein kinase binding / protein-containing complex / proteolysis / metal ion binding / nucleus / membrane / plasma membrane / cytoplasm Similarity search - Function | ||||||||||||
| Biological species | ![]() Homo sapiens (human) | ||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4.15 Å | ||||||||||||
Authors | Bhogaraju, S. / Galej, W.P. / Pfleiderer, M.M. / Adams, M. | ||||||||||||
| Funding support | Germany, 3items
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Citation | Journal: Nature / Year: 2019Title: Inhibition of bacterial ubiquitin ligases by SidJ-calmodulin catalysed glutamylation. Authors: Sagar Bhogaraju / Florian Bonn / Rukmini Mukherjee / Michael Adams / Moritz M Pfleiderer / Wojciech P Galej / Vigor Matkovic / Jaime Lopez-Mosqueda / Sissy Kalayil / Donghyuk Shin / Ivan Dikic / ![]() Abstract: The family of bacterial SidE enzymes catalyses phosphoribosyl-linked serine ubiquitination and promotes infectivity of Legionella pneumophila, a pathogenic bacteria that causes Legionnaires' disease. ...The family of bacterial SidE enzymes catalyses phosphoribosyl-linked serine ubiquitination and promotes infectivity of Legionella pneumophila, a pathogenic bacteria that causes Legionnaires' disease. SidE enzymes share the genetic locus with the Legionella effector SidJ that spatiotemporally opposes the toxicity of these enzymes in yeast and mammalian cells, through a mechanism that is currently unknown. Deletion of SidJ leads to a substantial defect in the growth of Legionella in both its natural hosts (amoebae) and in mouse macrophages. Here we demonstrate that SidJ is a glutamylase that modifies the catalytic glutamate in the mono-ADP ribosyl transferase domain of the SdeA, thus blocking the ubiquitin ligase activity of SdeA. The glutamylation activity of SidJ requires interaction with the eukaryotic-specific co-factor calmodulin, and can be regulated by intracellular changes in Ca concentrations. The cryo-electron microscopy structure of SidJ in complex with human apo-calmodulin revealed the architecture of this heterodimeric glutamylase. We show that, in cells infected with L. pneumophila, SidJ mediates the glutamylation of SidE enzymes on the surface of vacuoles that contain Legionella. We used quantitative proteomics to uncover multiple host proteins as putative targets of SidJ-mediated glutamylation. Our study reveals the mechanism by which SidE ligases are inhibited by a SidJ-calmodulin glutamylase, and opens avenues for exploring an understudied protein modification (glutamylation) in eukaryotes. | ||||||||||||
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Structure visualization
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| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 6s5t.cif.gz | 189.8 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb6s5t.ent.gz | 145.4 KB | Display | PDB format |
| PDBx/mmJSON format | 6s5t.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 6s5t_validation.pdf.gz | 1.2 MB | Display | wwPDB validaton report |
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| Full document | 6s5t_full_validation.pdf.gz | 1.2 MB | Display | |
| Data in XML | 6s5t_validation.xml.gz | 34.6 KB | Display | |
| Data in CIF | 6s5t_validation.cif.gz | 52.1 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/s5/6s5t ftp://data.pdbj.org/pub/pdb/validation_reports/s5/6s5t | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 10100MC M: map data used to model this data C: citing same article ( |
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| Similar structure data |
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Links
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Assembly
| Deposited unit | ![]()
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| 1 |
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Components
| #1: Protein | Mass: 100338.469 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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| #2: Protein | Mass: 16852.545 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: CALM2, CAM2, CAMB / Production host: ![]() |
| #3: Chemical | ChemComp-ANP / |
| Has ligand of interest | N |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
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| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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| Molecular weight | Value: 0.12 MDa / Experimental value: NO | ||||||||||||||||||||||||
| Source (natural) |
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| Source (recombinant) |
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| Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Recombinant Legionella pneumophila SidJ -human calmodulin complex | ||||||||||||||||||||||||
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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| Microscopy | Model: FEI TALOS ARCTICA |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Cs: 2.7 mm / C2 aperture diameter: 70 µm |
| Image recording | Electron dose: 40 e/Å2 / Detector mode: COUNTING / Film or detector model: FEI FALCON III (4k x 4k) |
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Processing
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| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 4.15 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 19851 / Symmetry type: POINT |
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Homo sapiens (human)
Germany, 3items
Citation

UCSF Chimera










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