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- EMDB-3704: Human cytoplasmic dynein-1 tail in the parallel state -

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Basic information

Entry
Database: EMDB / ID: EMD-3704
TitleHuman cytoplasmic dynein-1 tail in the parallel state
Map data
Sample
  • Complex: Human cytoplasmic dynein-1 tail in the parallel N-terminus state
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 12.0 Å
AuthorsZhang K / Foster HE / Carter AP
CitationJournal: Cell / Year: 2017
Title: Cryo-EM Reveals How Human Cytoplasmic Dynein Is Auto-inhibited and Activated.
Authors: Kai Zhang / Helen E Foster / Arnaud Rondelet / Samuel E Lacey / Nadia Bahi-Buisson / Alexander W Bird / Andrew P Carter /
Abstract: Cytoplasmic dynein-1 binds dynactin and cargo adaptor proteins to form a transport machine capable of long-distance processive movement along microtubules. However, it is unclear why dynein-1 moves ...Cytoplasmic dynein-1 binds dynactin and cargo adaptor proteins to form a transport machine capable of long-distance processive movement along microtubules. However, it is unclear why dynein-1 moves poorly on its own or how it is activated by dynactin. Here, we present a cryoelectron microscopy structure of the complete 1.4-megadalton human dynein-1 complex in an inhibited state known as the phi-particle. We reveal the 3D structure of the cargo binding dynein tail and show how self-dimerization of the motor domains locks them in a conformation with low microtubule affinity. Disrupting motor dimerization with structure-based mutagenesis drives dynein-1 into an open form with higher affinity for both microtubules and dynactin. We find the open form is also inhibited for movement and that dynactin relieves this by reorienting the motor domains to interact correctly with microtubules. Our model explains how dynactin binding to the dynein-1 tail directly stimulates its motor activity.
History
DepositionMay 4, 2017-
Header (metadata) releaseMay 31, 2017-
Map releaseJun 28, 2017-
UpdateJul 12, 2017-
Current statusJul 12, 2017Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 4
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 4
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_3704.png

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Map

FileDownload / File: emd_3704.map.gz / Format: CCP4 / Size: 11.4 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
2.64 Å/pix.
x 144 pix.
= 380.16 Å		2.64 Å/pix.
x 144 pix.
= 380.16 Å		2.64 Å/pix.
x 144 pix.
= 380.16 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 2.64 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 4. / Movie #1: 4
Minimum - Maximum-6.5171185 - 18.181692000000002
Average (Standard dev.)-0.000000000534757 (±1.1777796)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions144144144
Spacing144144144
CellA=B=C: 380.16 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z2.642.642.64
M x/y/z144144144
origin x/y/z0.0000.0000.000
length x/y/z380.160380.160380.160
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS144144144
D min/max/mean-6.51718.182-0.000

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Supplemental data

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Additional map: None

Fileemd_3704_additional.map
AnnotationNone
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Human cytoplasmic dynein-1 tail in the parallel N-terminus state

EntireName: Human cytoplasmic dynein-1 tail in the parallel N-terminus state
Components
  • Complex: Human cytoplasmic dynein-1 tail in the parallel N-terminus state

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Supramolecule #1: Human cytoplasmic dynein-1 tail in the parallel N-terminus state

SupramoleculeName: Human cytoplasmic dynein-1 tail in the parallel N-terminus state
type: complex / ID: 1 / Parent: 0
Source (natural)Organism: Homo sapiens (human)
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
Molecular weightExperimental: 1.4 MDa

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: FEI FALCON II (4k x 4k) / Average electron dose: 1.6 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionDetails: Particles were selected on the phase-flipped micrographs
CTF correctionSoftware - Name: Gctf (ver. 1.06)
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 12.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 1.4) / Number images used: 18416
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING

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