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- PDB-6znl: Cryo-EM structure of the dynactin complex -

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Basic information

Entry
Database: PDB / ID: 6znl
TitleCryo-EM structure of the dynactin complex
Components
  • (Dynactin subunit ...) x 5
  • ARP1 actin related protein 1 homolog A
  • Actin, cytoplasmic 1
  • Arp11
  • Capping protein (Actin filament) muscle Z-line, alpha 1
  • Dynactin 6
  • F-actin capping protein beta subunit
KeywordsSTRUCTURAL PROTEIN / Dynactin / Complex / Scaffold / Cytoskeleton
Function / homology
Function and homology information


RHOD GTPase cycle / Factors involved in megakaryocyte development and platelet production / Regulation of actin dynamics for phagocytic cup formation / EPHB-mediated forward signaling / Adherens junctions interactions / VEGFA-VEGFR2 Pathway / Cell-extracellular matrix interactions / RHO GTPases Activate WASPs and WAVEs / MAP2K and MAPK activation / retrograde axonal transport of mitochondrion ...RHOD GTPase cycle / Factors involved in megakaryocyte development and platelet production / Regulation of actin dynamics for phagocytic cup formation / EPHB-mediated forward signaling / Adherens junctions interactions / VEGFA-VEGFR2 Pathway / Cell-extracellular matrix interactions / RHO GTPases Activate WASPs and WAVEs / MAP2K and MAPK activation / retrograde axonal transport of mitochondrion / UCH proteinases / Gap junction degradation / Formation of annular gap junctions / RHOF GTPase cycle / Clathrin-mediated endocytosis / Formation of the dystrophin-glycoprotein complex (DGC) / centriolar subdistal appendage / positive regulation of neuromuscular junction development / Regulation of PLK1 Activity at G2/M Transition / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Anchoring of the basal body to the plasma membrane / AURKA Activation by TPX2 / dynactin complex / centriole-centriole cohesion / Recruitment of mitotic centrosome proteins and complexes / microtubule anchoring at centrosome / F-actin capping protein complex / WASH complex / ventral spinal cord development / retromer complex / cytoskeleton-dependent cytokinesis / cellular response to cytochalasin B / microtubule plus-end / nuclear membrane disassembly / regulation of transepithelial transport / positive regulation of microtubule nucleation / morphogenesis of a polarized epithelium / structural constituent of postsynaptic actin cytoskeleton / protein localization to adherens junction / melanosome transport / dense body / postsynaptic actin cytoskeleton / barbed-end actin filament capping / Tat protein binding / Neutrophil degranulation / coronary vasculature development / non-motile cilium assembly / regulation of cell morphogenesis / adherens junction assembly / retrograde transport, endosome to Golgi / apical protein localization / dynein complex / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / tight junction / Recruitment of NuMA to mitotic centrosomes / microtubule associated complex / COPI-mediated anterograde transport / aorta development / ventricular septum development / regulation of norepinephrine uptake / neuromuscular process / apical junction complex / transporter regulator activity / nuclear migration / neuromuscular junction development / nitric-oxide synthase binding / establishment or maintenance of cell polarity / cortical cytoskeleton / NuA4 histone acetyltransferase complex / dynein complex binding / cell leading edge / motor behavior / brush border / cleavage furrow / establishment of mitotic spindle orientation / kinesin binding / regulation of synaptic vesicle endocytosis / regulation of protein localization to plasma membrane / positive regulation of double-strand break repair via homologous recombination / intercellular bridge / stress fiber / cytoskeleton organization / neuron projection maintenance / axon cytoplasm / centriole / axonogenesis / calyx of Held / regulation of mitotic spindle organization / sarcomere / nitric-oxide synthase regulator activity / mitotic spindle organization / actin filament / adherens junction / cell motility / neuron cellular homeostasis / kinetochore
Similarity search - Function
Dynactin subunit 3 / Dynactin subunit p22 / Dynactin subunit 4 / Dynactin p62 family / Dynein associated protein / Dynein associated protein / Dynamitin / : / Dynamitin / Dynactin subunit 6 ...Dynactin subunit 3 / Dynactin subunit p22 / Dynactin subunit 4 / Dynactin p62 family / Dynein associated protein / Dynein associated protein / Dynamitin / : / Dynamitin / Dynactin subunit 6 / Dynactin subunit 5 / F-actin-capping protein subunit beta / F-actin capping protein, beta subunit, conserved site / F-actin-capping protein subunit beta, N-terminal domain / F-actin capping protein, beta subunit / F-actin capping protein beta subunit signature. / F-actin capping protein, alpha subunit, conserved site / F-actin capping protein alpha subunit signature 1. / F-actin capping protein alpha subunit signature 2. / F-actin-capping protein subunit alpha / F-actin-capping protein subunit alpha/beta / F-actin-capping protein subunit alpha/beta, domain 2 / F-actin capping protein, alpha subunit, domain 1 / F-actin capping protein alpha subunit / CAP-Gly domain signature. / CAP Gly-rich domain / CAP Gly-rich domain superfamily / CAP-Gly domain / CAP-Gly domain profile. / CAP_GLY / Hexapeptide repeat proteins / UDP N-Acetylglucosamine Acyltransferase; domain 1 / Bacterial transferase hexapeptide (six repeats) / ATPase, substrate binding domain, subdomain 4 / Actin; Chain A, domain 4 / Trimeric LpxA-like superfamily / 3 Solenoid / Actins signature 1. / Actin, conserved site / Actins signature 2. / Actin/actin-like conserved site / Actins and actin-related proteins signature. / Actin / Actin family / Actin / ATPase, nucleotide binding domain / Alpha-Beta Complex / Mainly Beta / Alpha Beta
Similarity search - Domain/homology
ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / Dynactin subunit 5 / Dynactin subunit 1 / Dynactin subunit 4 / Dynactin subunit 2 / F-actin-capping protein subunit alpha-1 / F-actin-capping protein subunit beta / Dynactin subunit 6 / Dynactin subunit 3 ...ADENOSINE-5'-DIPHOSPHATE / ADENOSINE-5'-TRIPHOSPHATE / Dynactin subunit 5 / Dynactin subunit 1 / Dynactin subunit 4 / Dynactin subunit 2 / F-actin-capping protein subunit alpha-1 / F-actin-capping protein subunit beta / Dynactin subunit 6 / Dynactin subunit 3 / Alpha-centractin / Actin-related protein 10 / Actin, cytoplasmic 1
Similarity search - Component
Biological speciesSus scrofa (pig)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsLau, C.K. / Lacey, S.E. / Carter, A.P.
Funding support United Kingdom, 2items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_UP_A025_1011 United Kingdom
Wellcome TrustWT210711 United Kingdom
CitationJournal: EMBO J / Year: 2021
Title: Cryo-EM reveals the complex architecture of dynactin's shoulder region and pointed end.
Authors: Clinton K Lau / Francis J O'Reilly / Balaji Santhanam / Samuel E Lacey / Juri Rappsilber / Andrew P Carter /
Abstract: Dynactin is a 1.1 MDa complex that activates the molecular motor dynein for ultra-processive transport along microtubules. In order to do this, it forms a tripartite complex with dynein and a coiled- ...Dynactin is a 1.1 MDa complex that activates the molecular motor dynein for ultra-processive transport along microtubules. In order to do this, it forms a tripartite complex with dynein and a coiled-coil adaptor. Dynactin consists of an actin-related filament whose length is defined by its flexible shoulder domain. Despite previous cryo-EM structures, the molecular architecture of the shoulder and pointed end of the filament is still poorly understood due to the lack of high-resolution information in these regions. Here we combine multiple cryo-EM datasets and define precise masking strategies for particle signal subtraction and 3D classification. This overcomes domain flexibility and results in high-resolution maps into which we can build the shoulder and pointed end. The unique architecture of the shoulder securely houses the p150 subunit and positions the four identical p50 subunits in different conformations to bind dynactin's filament. The pointed end map allows us to build the first structure of p62 and reveals the molecular basis for cargo adaptor binding to different sites at the pointed end.
History
DepositionJul 6, 2020Deposition site: PDBE / Processing site: PDBE
Revision 1.0Jul 29, 2020Provider: repository / Type: Initial release
Revision 1.1Apr 7, 2021Group: Database references / Category: citation
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.2Apr 28, 2021Group: Database references / Category: citation / Item: _citation.journal_volume
Revision 1.3May 1, 2024Group: Data collection / Database references / Category: chem_comp_atom / chem_comp_bond / database_2
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

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Structure viewerMolecule:
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Assembly

Deposited unit
A: ARP1 actin related protein 1 homolog A
B: ARP1 actin related protein 1 homolog A
C: ARP1 actin related protein 1 homolog A
D: ARP1 actin related protein 1 homolog A
E: ARP1 actin related protein 1 homolog A
F: ARP1 actin related protein 1 homolog A
G: ARP1 actin related protein 1 homolog A
H: Actin, cytoplasmic 1
I: ARP1 actin related protein 1 homolog A
J: Arp11
K: Capping protein (Actin filament) muscle Z-line, alpha 1
L: F-actin capping protein beta subunit
M: Dynactin subunit 2
N: Dynactin subunit 2
O: Dynactin subunit 3
U: Dynactin 6
V: Dynactin subunit 5
Y: Dynactin subunit 4
Z: Dynactin subunit 1
m: Dynactin subunit 2
n: Dynactin subunit 2
o: Dynactin subunit 3
z: Dynactin subunit 1
hetero molecules


Theoretical massNumber of molelcules
Total (without water)1,097,74936
Polymers1,093,20023
Non-polymers4,54813
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: gel filtration, cross-linking
TypeNameSymmetry operationNumber
identity operation1_5551
Buried area148840 Å2
ΔGint-1016 kcal/mol
Surface area289920 Å2
MethodPISA

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Components

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Protein , 6 types, 13 molecules ABCDEFGIHJKLU

#1: Protein
ARP1 actin related protein 1 homolog A


Mass: 42670.688 Da / Num. of mol.: 8 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: F2Z5G5
#2: Protein Actin, cytoplasmic 1 / Beta-actin


Mass: 41782.660 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: Q6QAQ1
#3: Protein Arp11


Mass: 46250.785 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: I3LHK5
#4: Protein Capping protein (Actin filament) muscle Z-line, alpha 1 / F-actin capping protein alpha 1 subunit / F-actin capping protein subunit alpha 1


Mass: 33059.848 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0PFK5
#5: Protein F-actin capping protein beta subunit / F-actin-capping protein subunit beta / F-actin-capping protein subunit beta isoform 1


Mass: 30669.768 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A9XFX6
#8: Protein Dynactin 6


Mass: 20703.910 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: D0G6S1

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Dynactin subunit ... , 5 types, 10 molecules MNmnOoVYZz

#6: Protein
Dynactin subunit 2


Mass: 44704.414 Da / Num. of mol.: 4 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A5G2QD80
#7: Protein Dynactin subunit 3 / Dynactin subunit 3 isoform 1


Mass: 21192.477 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: F1SEC0
#9: Protein Dynactin subunit 5


Mass: 20150.533 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A286ZK88
#10: Protein Dynactin subunit 4 / Dynactin subunit 4


Mass: 52920.434 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A4X1TB62
#11: Protein Dynactin subunit 1


Mass: 142547.156 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Sus scrofa (pig) / References: UniProt: A0A287B8J2*PLUS

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Non-polymers , 3 types, 13 molecules

#12: Chemical
ChemComp-ADP / ADENOSINE-5'-DIPHOSPHATE


Mass: 427.201 Da / Num. of mol.: 9 / Source method: obtained synthetically / Formula: C10H15N5O10P2 / Comment: ADP, energy-carrying molecule*YM
#13: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Comment: ATP, energy-carrying molecule*YM
#14: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 3 / Source method: obtained synthetically / Formula: Zn

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Details

Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Dynactin complex / Type: COMPLEX / Entity ID: #1-#11 / Source: NATURAL
Molecular weightValue: 1 MDa / Experimental value: NO
Source (natural)Organism: Sus scrofa (pig)
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 FIELD
Image recordingElectron dose: 52 e/Å2 / Film or detector model: FEI FALCON II (4k x 4k)

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Processing

EM software
IDNameCategory
19REFMACmodel refinement
20PHENIXmodel refinement
Image processingDetails: All 4 image detectors used for reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 336972 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL

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