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Open data
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Basic information
Entry | Database: PDB / ID: 5k7r | ||||||
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Title | MicroED structure of trypsin at 1.7 A resolution | ||||||
![]() | Cationic trypsin | ||||||
![]() | HYDROLASE | ||||||
Function / homology | ![]() trypsin / serpin family protein binding / serine protease inhibitor complex / digestion / endopeptidase activity / serine-type endopeptidase activity / proteolysis / extracellular space / metal ion binding Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON CRYSTALLOGRAPHY / electron crystallography / cryo EM / Resolution: 1.7 Å | ||||||
![]() | de la Cruz, M.J. / Hattne, J. / Shi, D. / Seidler, P. / Rodriguez, J. / Reyes, F.E. / Sawaya, M.R. / Cascio, D. / Eisenberg, D. / Gonen, T. | ||||||
![]() | ![]() Title: Atomic-resolution structures from fragmented protein crystals with the cryoEM method MicroED. Authors: M Jason de la Cruz / Johan Hattne / Dan Shi / Paul Seidler / Jose Rodriguez / Francis E Reyes / Michael R Sawaya / Duilio Cascio / Simon C Weiss / Sun Kyung Kim / Cynthia S Hinck / Andrew P ...Authors: M Jason de la Cruz / Johan Hattne / Dan Shi / Paul Seidler / Jose Rodriguez / Francis E Reyes / Michael R Sawaya / Duilio Cascio / Simon C Weiss / Sun Kyung Kim / Cynthia S Hinck / Andrew P Hinck / Guillermo Calero / David Eisenberg / Tamir Gonen / ![]() Abstract: Traditionally, crystallographic analysis of macromolecules has depended on large, well-ordered crystals, which often require significant effort to obtain. Even sizable crystals sometimes suffer from ...Traditionally, crystallographic analysis of macromolecules has depended on large, well-ordered crystals, which often require significant effort to obtain. Even sizable crystals sometimes suffer from pathologies that render them inappropriate for high-resolution structure determination. Here we show that fragmentation of large, imperfect crystals into microcrystals or nanocrystals can provide a simple path for high-resolution structure determination by the cryoEM method MicroED and potentially by serial femtosecond crystallography. | ||||||
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 57.8 KB | Display | ![]() |
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PDB format | ![]() | 41.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 202.1 KB | Display | ![]() |
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Full document | ![]() | 201.6 KB | Display | |
Data in XML | ![]() | 722 B | Display | |
Data in CIF | ![]() | 3.8 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8220MC ![]() 8216C ![]() 8217C ![]() 8218C ![]() 8219C ![]() 8221C ![]() 8222C ![]() 8472C ![]() 5k7nC ![]() 5k7oC ![]() 5k7pC ![]() 5k7qC ![]() 5k7sC ![]() 5k7tC ![]() 5ty4C M: map data used to model this data C: citing same article ( |
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Similar structure data | |
Experimental dataset #1 | Data reference: ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 23324.287 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() | ||
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#2: Chemical | #3: Water | ChemComp-HOH / | |
-Experimental details
-Experiment
Experiment | Method: ELECTRON CRYSTALLOGRAPHY |
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EM experiment | Aggregation state: 3D ARRAY / 3D reconstruction method: electron crystallography |
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Sample preparation
Component | Name: Trypsin / Type: ORGANELLE OR CELLULAR COMPONENT / Entity ID: #1 / Source: NATURAL | |||||||||||||||
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Molecular weight | Value: 0.023354 MDa / Experimental value: NO | |||||||||||||||
Source (natural) | Organism: ![]() ![]() | |||||||||||||||
Buffer solution | pH: 6.5 | |||||||||||||||
Buffer component |
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Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||
Vitrification | Cryogen name: ETHANE |
-Data collection
Experimental equipment | ![]() Model: Tecnai F20 / Image courtesy: FEI Company | ||||||||||||||||||||||||
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Microscopy | Model: FEI TECNAI F20 / Date: Mar 11, 2016 | ||||||||||||||||||||||||
Electron gun | Electron source: ![]() | ||||||||||||||||||||||||
Electron lens | Mode: DIFFRACTION | ||||||||||||||||||||||||
Specimen holder | Cryogen: NITROGEN | ||||||||||||||||||||||||
Image recording | Average exposure time: 4.1 sec. / Electron dose: 0.004 e/Å2 / Film or detector model: TVIPS TEMCAM-F416 (4k x 4k) / Num. of diffraction images: 1527 / Num. of grids imaged: 3 / Num. of real images: 1527 | ||||||||||||||||||||||||
Image scans | Sampling size: 0.0311999992 µm / Width: 2048 / Height: 2048 | ||||||||||||||||||||||||
EM diffraction | Camera length: 1500 mm | ||||||||||||||||||||||||
EM diffraction shell | Resolution: 1.7→1.79 Å / Fourier space coverage: 56.2 % / Multiplicity: 3.1 / Num. of structure factors: 1737 / Phase residual: 60.7 ° | ||||||||||||||||||||||||
EM diffraction stats | Fourier space coverage: 73.8 % / High resolution: 1.5 Å / Num. of intensities measured: 145833 / Num. of structure factors: 23542 / Phase error: 28.86 ° / Phase residual: 40.4 ° / Phase error rejection criteria: 0 / Rmerge: 0.773 / Rsym: 0.773 | ||||||||||||||||||||||||
Reflection | Resolution: 1.5→27.63 Å / Num. all: 145833 / Num. obs: 23542 / % possible obs: 73.8 % / Redundancy: 6.2 % / Rmerge(I) obs: 0.773 / Rpim(I) all: 0.332 / Net I/σ(I): 2.3 | ||||||||||||||||||||||||
Reflection shell |
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Processing
Software | Name: PHENIX / Version: (1.10_2155: ???) / Classification: refinement | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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EM 3D crystal entity | ∠α: 90 ° / ∠β: 90 ° / ∠γ: 90 ° / A: 53.12 Å / B: 56.08 Å / C: 64.38 Å / Space group name: P212121 / Space group num: 19 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
CTF correction | Type: NONE | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 1.7 Å / Resolution method: DIFFRACTION PATTERN/LAYERLINES / Symmetry type: 3D CRYSTAL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER / Space: RECIPROCAL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 2PTN Pdb chain-ID: A / Pdb chain residue range: 16-245 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Resolution: 1.7→25.86 Å / SU ML: 0.33 / Cross valid method: FREE R-VALUE / σ(F): 1.33 / Phase error: 28.86
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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LS refinement shell |
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