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- PDB-7xrd: Cryo-EM structure of Arf6 helical polymer assembled on lipid membrane -

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Basic information

Entry
Database: PDB / ID: 7xrd
TitleCryo-EM structure of Arf6 helical polymer assembled on lipid membrane
ComponentsADP-ribosylation factor 6ARF6
KeywordsLIPID BINDING PROTEIN / small GTPase / helical polymer / membrane tubulation
Function / homology
Function and homology information


erythrocyte apoptotic process / maintenance of postsynaptic density structure / regulation of dendritic spine development / establishment of epithelial cell polarity / negative regulation of receptor-mediated endocytosis / protein localization to endosome / negative regulation of dendrite development / ruffle assembly / negative regulation of protein localization to cell surface / regulation of Rac protein signal transduction ...erythrocyte apoptotic process / maintenance of postsynaptic density structure / regulation of dendritic spine development / establishment of epithelial cell polarity / negative regulation of receptor-mediated endocytosis / protein localization to endosome / negative regulation of dendrite development / ruffle assembly / negative regulation of protein localization to cell surface / regulation of Rac protein signal transduction / positive regulation of keratinocyte migration / positive regulation of focal adhesion disassembly / regulation of filopodium assembly / endocytic recycling / thioesterase binding / MET receptor recycling / filopodium membrane / protein localization to cell surface / Flemming body / TBC/RABGAPs / cortical actin cytoskeleton organization / positive regulation of actin filament polymerization / hepatocyte apoptotic process / cleavage furrow / regulation of presynapse assembly / synaptic vesicle endocytosis / endocytic vesicle / signaling adaptor activity / vesicle-mediated transport / ruffle / cellular response to nerve growth factor stimulus / small monomeric GTPase / G protein activity / liver development / protein localization to plasma membrane / positive regulation of protein secretion / positive regulation of protein localization to plasma membrane / intracellular protein transport / positive regulation of neuron projection development / recycling endosome membrane / GDP binding / presynapse / Clathrin-mediated endocytosis / nervous system development / cell cortex / early endosome membrane / postsynapse / cell differentiation / cell adhesion / endosome / cell cycle / cell division / focal adhesion / GTPase activity / glutamatergic synapse / GTP binding / Golgi apparatus / extracellular exosome / membrane / plasma membrane / cytosol
Similarity search - Function
ADP-ribosylation factor 6 / small GTPase Arf family profile. / Sar1p-like members of the Ras-family of small GTPases / Small GTPase superfamily, ARF/SAR type / ADP-ribosylation factor family / ARF-like small GTPases; ARF, ADP-ribosylation factor / Rab subfamily of small GTPases / Small GTP-binding protein domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
GUANOSINE-5'-TRIPHOSPHATE / ADP-ribosylation factor 6
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / helical reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsPang, X.Y. / Zhang, Y. / Sun, F.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: Cryo-EM structure of Arf6 helical polymer assembled on lipid membrane
Authors: Pang, X.Y. / Zhang, Y. / Sun, F. / Egelman, E.
History
DepositionMay 10, 2022Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Nov 15, 2023Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: ADP-ribosylation factor 6
B: ADP-ribosylation factor 6
C: ADP-ribosylation factor 6
D: ADP-ribosylation factor 6
hetero molecules


Theoretical massNumber of molelcules
Total (without water)86,39012
Polymers84,2004
Non-polymers2,1908
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein
ADP-ribosylation factor 6 / ARF6


Mass: 21050.121 Da / Num. of mol.: 4
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: ARF6 / Production host: Escherichia coli (E. coli) / References: UniProt: P62330
#2: Chemical
ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: Mg
#3: Chemical
ChemComp-GTP / GUANOSINE-5'-TRIPHOSPHATE / Guanosine triphosphate


Mass: 523.180 Da / Num. of mol.: 4 / Source method: obtained synthetically / Formula: C10H16N5O14P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: GTP, energy-carrying molecule*YM
Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: HELICAL ARRAY / 3D reconstruction method: helical reconstruction

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Sample preparation

ComponentName: Arf6 helical polymer assembled on lipid membrane / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Escherichia coli (E. coli)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 75000 X / Nominal defocus max: 2200 nm / Nominal defocus min: 1500 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: FEI FALCON III (4k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Helical symmertyAngular rotation/subunit: 27.28 ° / Axial rise/subunit: 28.01 Å / Axial symmetry: C5
3D reconstructionResolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 20820 / Symmetry type: HELICAL

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