[English] 日本語
![](img/lk-miru.gif)
- PDB-8oi8: Cryo-EM structure of ADP-bound, filamentous beta-actin harboring ... -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 8oi8 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of ADP-bound, filamentous beta-actin harboring the R183W mutation | ||||||||||||
![]() | Actin, cytoplasmic 1 | ||||||||||||
![]() | STRUCTURAL PROTEIN / Actin filament / cytoskeletal protein / ATPase | ||||||||||||
Function / homology | ![]() positive regulation of norepinephrine uptake / cellular response to cytochalasin B / regulation of transepithelial transport / morphogenesis of a polarized epithelium / bBAF complex / postsynaptic actin cytoskeleton organization / protein localization to adherens junction / postsynaptic actin cytoskeleton / npBAF complex / Tat protein binding ...positive regulation of norepinephrine uptake / cellular response to cytochalasin B / regulation of transepithelial transport / morphogenesis of a polarized epithelium / bBAF complex / postsynaptic actin cytoskeleton organization / protein localization to adherens junction / postsynaptic actin cytoskeleton / npBAF complex / Tat protein binding / brahma complex / structural constituent of postsynaptic actin cytoskeleton / nBAF complex / GBAF complex / regulation of G0 to G1 transition / dense body / Formation of annular gap junctions / Gap junction degradation / Cell-extracellular matrix interactions / Folding of actin by CCT/TriC / apical protein localization / regulation of double-strand break repair / regulation of nucleotide-excision repair / adherens junction assembly / Prefoldin mediated transfer of substrate to CCT/TriC / RSC-type complex / RHOF GTPase cycle / Adherens junctions interactions / tight junction / Sensory processing of sound by outer hair cells of the cochlea / regulation of norepinephrine uptake / regulation of mitotic metaphase/anaphase transition / Interaction between L1 and Ankyrins / Sensory processing of sound by inner hair cells of the cochlea / SWI/SNF complex / positive regulation of double-strand break repair / regulation of synaptic vesicle endocytosis / positive regulation of T cell differentiation / apical junction complex / establishment or maintenance of cell polarity / regulation of cyclin-dependent protein serine/threonine kinase activity / cortical cytoskeleton / maintenance of blood-brain barrier / positive regulation of stem cell population maintenance / NuA4 histone acetyltransferase complex / nitric-oxide synthase binding / Recycling pathway of L1 / regulation of G1/S transition of mitotic cell cycle / kinesin binding / brush border / calyx of Held / negative regulation of cell differentiation / positive regulation of double-strand break repair via homologous recombination / EPH-ephrin mediated repulsion of cells / RHO GTPases Activate WASPs and WAVEs / RHO GTPases activate IQGAPs / regulation of protein localization to plasma membrane / positive regulation of myoblast differentiation / EPHB-mediated forward signaling / substantia nigra development / axonogenesis / negative regulation of protein binding / Translocation of SLC2A4 (GLUT4) to the plasma membrane / RHO GTPases Activate Formins / cell motility / actin filament / positive regulation of cell differentiation / regulation of transmembrane transporter activity / adherens junction / FCGR3A-mediated phagocytosis / Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement / DNA Damage Recognition in GG-NER / Signaling by high-kinase activity BRAF mutants / Schaffer collateral - CA1 synapse / MAP2K and MAPK activation / tau protein binding / B-WICH complex positively regulates rRNA expression / structural constituent of cytoskeleton / Regulation of actin dynamics for phagocytic cup formation / kinetochore / nuclear matrix / platelet aggregation / VEGFA-VEGFR2 Pathway / cytoplasmic ribonucleoprotein granule / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / UCH proteinases / nucleosome / Signaling by BRAF and RAF1 fusions / cell-cell junction / actin cytoskeleton / presynapse / lamellipodium / Clathrin-mediated endocytosis / Factors involved in megakaryocyte development and platelet production / HATs acetylate histones / regulation of apoptotic process / vesicle Similarity search - Function | ||||||||||||
Biological species | ![]() | ||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.28 Å | ||||||||||||
![]() | Oosterheert, W. / Blanc, F.E.C. / Roy, A. / Belyy, A. / Hofnagel, O. / Hummer, G. / Bieling, P. / Raunser, S. | ||||||||||||
Funding support | ![]()
| ||||||||||||
![]() | ![]() Title: Molecular mechanisms of inorganic-phosphate release from the core and barbed end of actin filaments. Authors: Wout Oosterheert / Florian E C Blanc / Ankit Roy / Alexander Belyy / Micaela Boiero Sanders / Oliver Hofnagel / Gerhard Hummer / Peter Bieling / Stefan Raunser / ![]() Abstract: The release of inorganic phosphate (P) from actin filaments constitutes a key step in their regulated turnover, which is fundamental to many cellular functions. The mechanisms underlying P release ...The release of inorganic phosphate (P) from actin filaments constitutes a key step in their regulated turnover, which is fundamental to many cellular functions. The mechanisms underlying P release from the core and barbed end of actin filaments remain unclear. Here, using human and bovine actin isoforms, we combine cryo-EM with molecular-dynamics simulations and in vitro reconstitution to demonstrate how actin releases P through a 'molecular backdoor'. While constantly open at the barbed end, the backdoor is predominantly closed in filament-core subunits and opens only transiently through concerted amino acid rearrangements. This explains why P escapes rapidly from the filament end but slowly from internal subunits. In a nemaline-myopathy-associated actin variant, the backdoor is predominantly open in filament-core subunits, resulting in accelerated P release and filaments with drastically shortened ADP-P caps. Our results provide the molecular basis for P release from actin and exemplify how a disease-linked mutation distorts the nucleotide-state distribution and atomic structure of the filament. | ||||||||||||
History |
|
-
Structure visualization
Structure viewer | Molecule: ![]() ![]() |
---|
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 397.5 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 271.4 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 64.1 KB | Display | |
Data in CIF | ![]() | 90.7 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 16888MC ![]() 8oi6C ![]() 8oidC C: citing same article ( M: map data used to model this data |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
-
Assembly
Deposited unit | ![]()
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Ens-ID: ens_1
NCS oper:
|
-
Components
#1: Protein | Mass: 41792.633 Da / Num. of mol.: 5 / Mutation: R183W, C272A Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: P60709, Hydrolases; Acting on acid anhydrides; Acting on acid anhydrides to facilitate cellular and subcellular movement #2: Chemical | ChemComp-ADP / #3: Chemical | ChemComp-MG / #4: Water | ChemComp-HOH / | Has ligand of interest | Y | |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: FILAMENT / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: Actin filament harboring the R183W mutation. / Type: COMPLEX Details: Actin was purified as monomer from insect cells. It was then polymerized into a filament in vitro. Entity ID: #1 / Source: RECOMBINANT | ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Molecular weight | Experimental value: NO | ||||||||||||||||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() | ||||||||||||||||||||||||||||||
Buffer solution | pH: 7.1 Details: 1x KMEH (10 mM HEPES pH 7.1, 100 mM KCl, 2 mM MgCl2, 1 mM EGTA) supplemented with 0.02% Tween20 (v/v) | ||||||||||||||||||||||||||||||
Buffer component |
| ||||||||||||||||||||||||||||||
Specimen | Conc.: 2.3 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Actin filaments were reconstituted by adding salt to monomeric actin. | ||||||||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/1 | ||||||||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 286 K |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS Details: Titan Krios G3 microscope was aligned using Sherpa (FEI). Data collected in superresolution mode. |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 130000 X / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm / Alignment procedure: ZEMLIN TABLEAU |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 70 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 7916 |
EM imaging optics | Energyfilter name: GIF Bioquantum / Energyfilter slit width: 15 eV |
-
Processing
Software |
| ||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software |
| ||||||||||||||||||||||||||||||||||||||||
Image processing | Details: K3 operated in super-resolution mode. | ||||||||||||||||||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 1569882 | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.28 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 1386604 / Details: Refinement from Local searches in RELION. / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL Details: The structure was refined using phenix-real-space refine. | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | Accession code: 8a2t / Source name: PDB / Type: experimental model | ||||||||||||||||||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 31.83 Å2 | ||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
| ||||||||||||||||||||||||||||||||||||||||
Refine LS restraints NCS |
|