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- EMDB-3968: The in situ structure of the Chlamydomonas COPI coat: average of ... -

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Basic information

Entry
Database: EMDB / ID: 3968
TitleThe in situ structure of the Chlamydomonas COPI coat: average of all data
SampleWhole Chlamydomonas cells
SourceChlamydomonas reinhardtii / plant
Map dataThe in situ structure of of the Chlamydomonas COPI coat
Methodsubtomogram averaging, at 20 Å resolution
AuthorsBykov YS / Schaffer M / Dodonova SO / Albert S / Plitzko JM / Baumeister W / Engel BD / Briggs JAG
CitationElife, 2017, 6

Elife, 2017, 6 Yorodumi Papers
The structure of the COPI coat determined within the cell.
Yury S Bykov / Miroslava Schaffer / Svetlana O Dodonova / Sahradha Albert / Jürgen M Plitzko / Wolfgang Baumeister / Benjamin D Engel / John Ag Briggs

DateDeposition: Nov 7, 2017 / Header (metadata) release: Nov 15, 2017 / Map release: Nov 29, 2017 / Last update: Nov 29, 2017

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.08
  • Imaged by UCSF CHIMERA
  • Download
  • Surface view colored by height
  • Surface level: 0.08
  • Imaged by UCSF CHIMERA
  • Download
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Supplemental images

Downloads & links

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Map

Fileemd_3968.map.gz (map file in CCP4 format, 8389 KB)
Projections & slices

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AxesZ (Sec.)Y (Row.)X (Col.)
128 pix
3.42 Å/pix.
= 437.76 Å
128 pix
3.42 Å/pix.
= 437.76 Å
128 pix
3.42 Å/pix.
= 437.76 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider package.

Voxel sizeX=Y=Z: 3.42 Å
Density
Contour Level:0.08 (by author), 0.08 (movie #1):
Minimum - Maximum-0.18521886 - 0.34870824
Average (Standard dev.)0.00812247 (0.08789345)
Details

EMDB XML:

Space Group Number1
Map Geometry
Axis orderXYZ
Dimensions128128128
Origin000
Limit127127127
Spacing128128128
CellA=B=C: 437.76 Å
α=β=γ: 90 deg.

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z3.423.423.42
M x/y/z128128128
origin x/y/z0.0000.0000.000
length x/y/z437.760437.760437.760
α/β/γ90.00090.00090.000
start NX/NY/NZ
NX/NY/NZ
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS128128128
D min/max/mean-0.1850.3490.008

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Supplemental data

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Sample components

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Entire Whole Chlamydomonas cells

EntireName: Whole Chlamydomonas cells
Details: Grown suspended in TAP media, with normal atmosphere aeration and constant light
Number of components: 1

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Component #1: cellular-component, Whole Chlamydomonas cells

Cellular-componentName: Whole Chlamydomonas cells
Details: Grown suspended in TAP media, with normal atmosphere aeration and constant light
Recombinant expression: No
SourceSpecies: Chlamydomonas reinhardtii / plant / Strain: mat3-4
Source (natural)Organelle: Golgi

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Experimental details

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Sample preparation

Specimen statecell
Sample solutionBuffer solution: TAP media / pH: 7
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE-PROPANE MIXTURE / Humidity: 90 %
Details: Blotted from the back side for 10 seconds with 10 blot force before plunging

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
ImagingMicroscope: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Electron dose: 1.5 e/Å2 / Illumination mode: FLOOD BEAM
LensMagnification: 42000 X (nominal) / Cs: 2.7 mm / Imaging mode: BRIGHT FIELD / Defocus: 4000 - 6000 nm / Energy filter: GIF Quantum LS / Energy window: 0-20 eV
Specimen HolderModel: FEI TITAN KRIOS AUTOGRID HOLDER / Tilt Angle: -60 - 60 deg.
CameraDetector: GATAN K2 (4k x 4k)

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Image processing

ProcessingMethod: subtomogram averaging / Applied symmetry: C3 (3 fold cyclic)
3D reconstructionAlgorithm: BACK PROJECTION / Software: TOM, AV3 / Resolution: 20 Å / Resolution method: FSC 0.143 CUT-OFF

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