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- PDB-8oid: Cryo-EM structure of ADP-bound, filamentous beta-actin harboring ... -
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Basic information
Entry | Database: PDB / ID: 8oid | ||||||||||||
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Title | Cryo-EM structure of ADP-bound, filamentous beta-actin harboring the N111S mutation | ||||||||||||
![]() | Actin, cytoplasmic 1, N-terminally processed | ||||||||||||
![]() | 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 / structural constituent of postsynaptic actin cytoskeleton / brahma complex / nBAF complex / GBAF complex / dense body / regulation of G0 to G1 transition / 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 / RHOF GTPase cycle / RSC-type complex / Adherens junctions interactions / tight junction / Sensory processing of sound by outer hair cells of the cochlea / regulation of norepinephrine uptake / Interaction between L1 and Ankyrins / regulation of mitotic metaphase/anaphase transition / 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 / regulation of G1/S transition of mitotic cell cycle / Recycling pathway of L1 / 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 / adherens junction / FCGR3A-mediated phagocytosis / regulation of transmembrane transporter activity / 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 / platelet aggregation / nuclear matrix / 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: 2.3 Å | ||||||||||||
![]() | Oosterheert, W. / Blanc, F.E.C. / Roy, A. / Belyy, A. / Hofnagel, O. / Hummer, G. / Bieling, P. / Raunser, S. | ||||||||||||
Funding support | ![]()
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![]() | ![]() 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 |
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Structure viewer | Molecule: ![]() ![]() |
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-Validation report
Summary document | ![]() | 1.3 MB | Display | ![]() |
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Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 65.2 KB | Display | |
Data in CIF | ![]() | 98.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 16889MC ![]() 8oi6C ![]() 8oi8C C: citing same article ( M: map data used to model this data |
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Similar structure data | Similarity search - Function & homology ![]() |
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Assembly
Deposited unit | ![]()
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Ens-ID: ens_1
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