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Yorodumi- PDB-7jsy: Proteinase K soaked with I3C determined by MicroED from a single ... -
+Open data
-Basic information
Entry | Database: PDB / ID: 7jsy | |||||||||
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Title | Proteinase K soaked with I3C determined by MicroED from a single milled microcrystal | |||||||||
Components | Proteinase K | |||||||||
Keywords | HYDROLASE / Proteinase K | |||||||||
Function / homology | Function and homology information peptidase K / serine-type endopeptidase activity / proteolysis / extracellular space / metal ion binding Similarity search - Function | |||||||||
Biological species | Parengyodontium album (fungus) | |||||||||
Method | ELECTRON CRYSTALLOGRAPHY / electron crystallography / cryo EM / Resolution: 1.78 Å | |||||||||
Authors | Martynowycz, M.W. / Gonen, T. | |||||||||
Funding support | United States, 2items
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Citation | Journal: Structure / Year: 2021 Title: Ligand Incorporation into Protein Microcrystals for MicroED by On-Grid Soaking. Authors: Michael W Martynowycz / Tamir Gonen / Abstract: A high throughout method for soaking ligands into protein microcrystals on TEM grids is presented. Every crystal on the grid is soaked simultaneously using only standard cryoelectron microscopy ...A high throughout method for soaking ligands into protein microcrystals on TEM grids is presented. Every crystal on the grid is soaked simultaneously using only standard cryoelectron microscopy vitrification equipment. The method is demonstrated using proteinase K microcrystals soaked with the 5-amino-2,4,6-triodoisophthalic acid (I3C) magic triangle. A soaked microcrystal is milled to a thickness of approximately 200 nm using a focused ion beam, and MicroED data are collected. A high-resolution structure of the protein with four ligands at high occupancy is determined. Both the number of ligands bound and their occupancy is higher using on-grid soaking of microcrystals compared with much larger crystals treated similarly and investigated by X-ray crystallography. These results indicate that on-grid soaking ligands into microcrystals results in efficient uptake of ligands into protein microcrystals. | |||||||||
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 | 7jsy.cif.gz | 134.7 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7jsy.ent.gz | 88.3 KB | Display | PDB format |
PDBx/mmJSON format | 7jsy.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7jsy_validation.pdf.gz | 1 MB | Display | wwPDB validaton report |
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Full document | 7jsy_full_validation.pdf.gz | 1.1 MB | Display | |
Data in XML | 7jsy_validation.xml.gz | 14.2 KB | Display | |
Data in CIF | 7jsy_validation.cif.gz | 21.4 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/js/7jsy ftp://data.pdbj.org/pub/pdb/validation_reports/js/7jsy | HTTPS FTP |
-Related structure data
Related structure data | 22463MC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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Unit cell |
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Components on special symmetry positions |
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-Components
#1: Protein | Mass: 28930.783 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) Parengyodontium album (fungus) / References: UniProt: P06873, peptidase K | ||||
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#2: Chemical | ChemComp-I3C / #3: Water | ChemComp-HOH / | Has ligand of interest | N | |
-Experimental details
-Experiment
Experiment | Method: ELECTRON CRYSTALLOGRAPHY |
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EM experiment | Aggregation state: 3D ARRAY / 3D reconstruction method: electron crystallography |
-Sample preparation
Component | Name: Proteinase K / Type: COMPLEX / Details: Serine protease / Entity ID: #1 / Source: NATURAL |
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Molecular weight | Value: 0.0289 MDa / Experimental value: NO |
Source (natural) | Organism: Parengyodontium album (fungus) |
Buffer solution | pH: 7.5 |
Specimen | Conc.: 5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R2/2 |
Vitrification | Cryogen name: ETHANE |
-Data collection
Microscopy | Model: TFS TALOS Details: Tilt series: -30 to +30, 0.25 deg/sec, 1 sec readout |
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Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: DIFFRACTION / Nominal defocus min: 0 nm / C2 aperture diameter: 70 µm / Alignment procedure: BASIC |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (min): 70 K |
Image recording | Average exposure time: 1 sec. / Electron dose: 0.01 e/Å2 / Film or detector model: FEI CETA (4k x 4k) / Num. of diffraction images: 240 / Num. of grids imaged: 1 / Num. of real images: 240 |
Image scans | Sampling size: 28 µm / Width: 4096 / Height: 4096 |
EM diffraction | Camera length: 1900 mm / Tilt angle list: -30,30 |
EM diffraction shell | Resolution: 43.32→1.78 Å / Fourier space coverage: 94.52 % / Multiplicity: 4.9 / Num. of structure factors: 10458 / Phase residual: 18 ° |
EM diffraction stats | Fourier space coverage: 94.52 % / High resolution: 1.78 Å / Num. of intensities measured: 109326 / Num. of structure factors: 10458 / Phase error: 18 ° / Phase residual: 18 ° / Phase error rejection criteria: 0 / Rmerge: 0.26 / Rsym: 0.13 |
Reflection | Biso Wilson estimate: 14.37 Å2 |
-Processing
Software |
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EM 3D crystal entity | ∠α: 90 ° / ∠β: 90 ° / ∠γ: 90 ° / A: 67.55 Å / B: 67.55 Å / C: 102.77 Å / Space group name: 96 / Space group num: 96 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 1.78 Å / Resolution method: DIFFRACTION PATTERN/LAYERLINES / Algorithm: FOURIER SPACE / Symmetry type: 3D CRYSTAL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | B value: 13.51 / Protocol: RIGID BODY FIT / Space: RECIPROCAL / Target criteria: maximum liklihood | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 6CL7 Pdb chain-ID: A / Pdb chain residue range: 1-279 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Resolution: 1.78→43.32 Å / SU ML: 0.2175 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 19.6251 Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 13.51 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: LAST / Resolution: 1.78→43.32 Å
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Refine LS restraints |
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LS refinement shell |
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