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- EMDB-6101: CryoEM reveals different coronin binding modes for ADP- and ADP-B... -
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Basic information
Entry | Database: EMDB / ID: EMD-6101 | |||||||||
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Title | CryoEM reveals different coronin binding modes for ADP- and ADP-BeFx- actin filaments | |||||||||
![]() | Actin-coronin complex in ADP-BeFx state | |||||||||
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![]() | actin / coronin | |||||||||
Function / homology | ![]() positive regulation of Arp2/3 complex-mediated actin nucleation / actin cortical patch localization / Arp2/3 complex binding / negative regulation of Arp2/3 complex-mediated actin nucleation / actin cortical patch / cytoskeletal motor activator activity / tropomyosin binding / myosin heavy chain binding / troponin I binding / mesenchyme migration ...positive regulation of Arp2/3 complex-mediated actin nucleation / actin cortical patch localization / Arp2/3 complex binding / negative regulation of Arp2/3 complex-mediated actin nucleation / actin cortical patch / cytoskeletal motor activator activity / tropomyosin binding / myosin heavy chain binding / troponin I binding / mesenchyme migration / filamentous actin / actin filament bundle / striated muscle thin filament / actin filament bundle assembly / skeletal muscle thin filament assembly / skeletal muscle myofibril / actin monomer binding / microtubule-based process / stress fiber / skeletal muscle fiber development / titin binding / actin filament polymerization / actin filament organization / filopodium / actin filament / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / calcium-dependent protein binding / actin filament binding / lamellipodium / protein-macromolecule adaptor activity / cell body / microtubule binding / hydrolase activity / protein domain specific binding / calcium ion binding / positive regulation of gene expression / magnesium ion binding / ATP binding / identical protein binding / cytoplasm Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||
Method | helical reconstruction / cryo EM / Resolution: 8.6 Å | |||||||||
![]() | Ge P / Durer ZAO / Kudryashov D / Zhou ZH / Reisler E | |||||||||
![]() | ![]() Title: Cryo-EM reveals different coronin binding modes for ADP- and ADP-BeFx actin filaments. Authors: Peng Ge / Zeynep A Oztug Durer / Dmitri Kudryashov / Z Hong Zhou / Emil Reisler / ![]() Abstract: Essential cellular processes involving the actin cytoskeleton are regulated by auxiliary proteins that can sense the nucleotide state of actin. Here we report cryo-EM structures for ADP-bound and ADP- ...Essential cellular processes involving the actin cytoskeleton are regulated by auxiliary proteins that can sense the nucleotide state of actin. Here we report cryo-EM structures for ADP-bound and ADP-beryllium fluoride (ADP-BeFx, an ADP-Pi mimic)-bound actin filaments in complex with the β-propeller domain of yeast coronin 1 (crn1), at 8.6-Å resolution. Our structures reveal the main differences in the interaction of coronin with the two nucleotide states of F-actin. We derived pseudoatomic models by fitting the atomic structures of actin and coronin into the EM envelopes and confirmed the identified interfaces on actin by chemical cross-linking, fluorescence spectroscopy and actin mutagenesis. The models offer a structural explanation for the nucleotide-dependent effects of coronin on cofilin-assisted remodeling of F-actin. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 118.3 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 10.7 KB 10.7 KB | Display Display | ![]() |
Images | ![]() ![]() | 33.7 KB 2.6 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 79.2 KB | Display | ![]() |
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Full document | ![]() | 78.3 KB | Display | |
Data in XML | ![]() | 493 B | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Actin-coronin complex in ADP-BeFx state | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.437 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Actin-Coronin complex in ADP-BeFx state
Entire | Name: Actin-Coronin complex in ADP-BeFx state |
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Components |
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-Supramolecule #1000: Actin-Coronin complex in ADP-BeFx state
Supramolecule | Name: Actin-Coronin complex in ADP-BeFx state / type: sample / ID: 1000 Oligomeric state: helix; one coronin subunit per one actin subunit Number unique components: 2 |
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-Macromolecule #1: actin
Macromolecule | Name: actin / type: protein_or_peptide / ID: 1 / Oligomeric state: helix / Recombinant expression: No / Database: NCBI |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 42 KDa |
Sequence | UniProtKB: Actin, alpha skeletal muscle |
-Macromolecule #2: Coronin 1
Macromolecule | Name: Coronin 1 / type: protein_or_peptide / ID: 2 / Name.synonym: crn1 / Oligomeric state: helix / Recombinant expression: Yes |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 72 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | UniProtKB: Coronin-like protein |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | helical reconstruction |
Aggregation state | helical array |
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Sample preparation
Buffer | pH: 7.5 Details: 10 mM Tris, 0.2 mM CaCl2, 1 mM MgCl2, 50 mM KCl, 0.1 mM BeCl2, 5 mM NaF, 1 mM DTT |
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Grid | Details: 300 Me Quantifoil R1.2/1.3 |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 77 K / Instrument: FEI VITROBOT MARK IV Method: blot force 1, blot time 4s, blot once, wait time 2s, drain time 2s; sample volume applied to each grid was 2.5 uL |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Temperature | Average: 77 K |
Alignment procedure | Legacy - Astigmatism: Relion software correction |
Date | Dec 12, 2012 |
Image recording | Category: CCD / Film or detector model: GATAN ULTRASCAN 4000 (4k x 4k) / Digitization - Sampling interval: 15 µm / Number real images: 1200 / Average electron dose: 25 e/Å2 / Bits/pixel: 16 |
Electron beam | Acceleration voltage: 120 kV / Electron source: ![]() |
Electron optics | Calibrated magnification: 104384 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 4.0 µm / Nominal defocus min: 2.0 µm / Nominal magnification: 59000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Details | Relion-based IHRSR |
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Final reconstruction | Applied symmetry - Helical parameters - Δz: 28.23 Å Applied symmetry - Helical parameters - Δ&Phi: 166.3 ° Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric) Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 8.6 Å / Resolution method: OTHER / Software - Name: Relion, IHRSR |
CTF correction | Details: Each particle |