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Yorodumi- PDB-5mw1: cryoEM structure of crenactin double helical filament at 3.8A res... -
+Open data
-Basic information
Entry | Database: PDB / ID: 5mw1 | |||||||||
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Title | cryoEM structure of crenactin double helical filament at 3.8A resolution | |||||||||
Components | Actin/actin family protein | |||||||||
Keywords | STRUCTURAL PROTEIN / actin / bacterial cytoskeleton | |||||||||
Function / homology | Function and homology information Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / cytoskeleton / hydrolase activity / ATP binding / cytoplasm Similarity search - Function | |||||||||
Biological species | Pyrobaculum calidifontis (archaea) | |||||||||
Method | ELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
Authors | Izore, T. / Lowe, J. | |||||||||
Funding support | United Kingdom, 2items
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Citation | Journal: Elife / Year: 2016 Title: Crenactin forms actin-like double helical filaments regulated by arcadin-2. Authors: Thierry Izoré / Danguole Kureisaite-Ciziene / Stephen H McLaughlin / Jan Löwe / Abstract: The similarity of eukaryotic actin to crenactin, a filament-forming protein from the crenarchaeon supports the theory of a common origin of Crenarchaea and Eukaryotes. Monomeric structures of ...The similarity of eukaryotic actin to crenactin, a filament-forming protein from the crenarchaeon supports the theory of a common origin of Crenarchaea and Eukaryotes. Monomeric structures of crenactin and actin are similar, although their filament architectures were suggested to be different. Here we report that crenactin forms double helical filaments that show exceptional similarity to eukaryotic F-actin. With cryo-electron microscopy and helical reconstruction we solved the structure of the crenactin filament to 3.8 Å resolution. When forming double filaments, the 'hydrophobic plug' loop in crenactin rearranges. Arcadin-2, also encoded by the arcade gene cluster, binds tightly with its C-terminus to the hydrophobic groove of crenactin. Binding is reminiscent of eukaryotic actin modulators such as cofilin and thymosin β4 and arcadin-2 is a depolymeriser of crenactin filaments. Our work further supports the theory of shared ancestry of Eukaryotes and Crenarchaea. | |||||||||
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 | 5mw1.cif.gz | 505.4 KB | Display | PDBx/mmCIF format |
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PDB format | pdb5mw1.ent.gz | 417 KB | Display | PDB format |
PDBx/mmJSON format | 5mw1.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 5mw1_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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Full document | 5mw1_full_validation.pdf.gz | 1.3 MB | Display | |
Data in XML | 5mw1_validation.xml.gz | 82.5 KB | Display | |
Data in CIF | 5mw1_validation.cif.gz | 121.4 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/mw/5mw1 ftp://data.pdbj.org/pub/pdb/validation_reports/mw/5mw1 | HTTPS FTP |
-Related structure data
Related structure data | 4117MC 5ly3C 5ly5C 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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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Component-ID: 1 / Ens-ID: 1 / Beg auth comp-ID: SER / Beg label comp-ID: SER / End auth comp-ID: PRO / End label comp-ID: PRO / Refine code: 1 / Auth seq-ID: 5 - 430 / Label seq-ID: 5 - 430
NCS ensembles :
NCS oper:
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-Components
#1: Protein | Mass: 48425.484 Da / Num. of mol.: 6 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Pyrobaculum calidifontis (archaea) / Gene: Pcal_1635 / Production host: Escherichia coli (E. coli) / References: UniProt: A3MWN5 #2: Chemical | ChemComp-ADP / |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: HELICAL ARRAY / 3D reconstruction method: helical reconstruction |
-Sample preparation
Component | Name: crenactin double helical filaments / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: Pyrobaculum calidifontis (archaea) |
Source (recombinant) | Organism: Escherichia coli (E. coli) |
Buffer solution | pH: 7 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid type: Quantifoil |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE |
-Electron microscopy imaging
Experimental equipment | Model: Tecnai Polara / Image courtesy: FEI Company |
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Microscopy | Model: FEI POLARA 300 |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 40 e/Å2 / Detector mode: INTEGRATING / Film or detector model: FEI FALCON II (4k x 4k) |
-Processing
Software | Name: REFMAC / Version: 5.8.0151 / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Helical symmerty | Angular rotation/subunit: -161.9 ° / Axial rise/subunit: 25.6 Å / Axial symmetry: C1 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 470396 / Symmetry type: HELICAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: OTHER / Space: RECIPROCAL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Resolution: 3.8→214.4 Å / Cor.coef. Fo:Fc: 0.825 / SU B: 31.405 / SU ML: 0.422 / ESU R: 0.868 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Solvent model: PARAMETERS FOR MASK CACLULATION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 105.169 Å2
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Refinement step | Cycle: 1 / Total: 20358 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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