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- EMDB-3458: negative-stain volume of Sso DNA PolB1 -

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Basic information

Database: EMDB / ID: 3458
Titlenegative-stain volume of Sso DNA PolB1
Samplearchaeal DNA polymerase B1
Map dataFinal map from iteration 10 onto which FSC has been calculated and displayed (Figure S4C, right). Contour level in Chimera
Methodsingle particle reconstruction, at 22.8 Å resolution
AuthorsAbrescia NGA / Bell SD
CitationNat Commun, 2017, 8, 15075-15075

Nat Commun, 2017, 8, 15075-15075 StrPapers
Identification and characterization of a heterotrimeric archaeal DNA polymerase holoenzyme.
Jiangyu Yan / Thomas R Beattie / Adriana L Rojas / Kelly Schermerhorn / Tamzin Gristwood / Jonathan C Trinidad / Sonja V Albers / Pietro Roversi / Andrew F Gardner / Nicola G A Abrescia / Stephen D Bell

DateDeposition: Nov 3, 2016 / Header (metadata) release: Dec 7, 2016 / Map release: May 17, 2017 / Last update: Aug 2, 2017

Structure visualization

  • Surface view with section colored by density value
  • Surface level: 0.0236
  • Imaged by UCSF CHIMERA
  • Download
  • Surface view colored by radius
  • Surface level: 0.0236
  • Imaged by UCSF CHIMERA
  • Download
3D viewer

View / / Stereo:
Slabnear <=> far

fix: /
Orientation Rotation
Misc. /
Supplemental images

Downloads & links


Fileemd_3458.map.gz (map file in CCP4 format, 8389 KB)
Projections & slices

Image control

AxesZ (Sec.)Y (Row.)X (Col.)
128 pix
1.66 Å/pix.
= 212.48 Å
128 pix
1.66 Å/pix.
= 212.48 Å
128 pix
1.66 Å/pix.
= 212.48 Å



Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider package.

Voxel sizeX=Y=Z: 1.66 Å
Contour Level:0.025 (by author), 0.0236 (movie #1):
Minimum - Maximum-0.04231351 - 0.08533787
Average (Standard dev.)0.0006148041 (0.006312904)


Space Group Number1
Map Geometry
Axis orderXYZ
CellA=B=C: 212.48 Å
α=β=γ: 90 deg.

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.661.661.66
M x/y/z128128128
origin x/y/z0.0000.0000.000
length x/y/z212.480212.480212.480
start NX/NY/NZ
MAP C/R/S123
start NC/NR/NS000
D min/max/mean-0.0420.0850.001

Supplemental data

Mask #1

Fileemd_3458_msk_1.map ( map file in CCP4 format, 8389 KB )
Projections & Slices
Slices (1/2)
Density Histograms
Data typeImage stored as Reals
Annotation detailsmask created using the initial reference map (Figure S4B) with soft edges.
Space group number1

Mask #1~

Projections & Slices
Slices (1/2)
Density Histograms

Sample components

Entire archaeal DNA polymerase B1

EntireName: archaeal DNA polymerase B1 / Details: This is the apo enzyme. / Number of components: 2
MassTheoretical: 101 kDa

Component #1: protein, archaeal DNA polymerase B1

ProteinName: archaeal DNA polymerase B1 / Details: This is the apo enzyme. / Recombinant expression: No
MassTheoretical: 101 kDa
SourceSpecies: Archaea
Source (engineered)Expression System: Escherichia coli / bacteria / エシェリキア・コリ, 大腸菌 /
Vector: pET33b

Component #2: protein, DNA polymerase B1

ProteinName: DNA polymerase B1 / Recombinant expression: No
Source (engineered)Expression System: Archaea / Vector: pET33b

Experimental details

Sample preparation

Specimen stateparticle
Sample solutionSpecimen conc.: 0.01 mg/ml / pH: 7.5
StainingNegatively stained EM specimens were prepared using carbon-coated grids and stained with 2% of uranyl formate solution.
VitrificationCryogen name: NONE

Electron microscopy imaging

ImagingMicroscope: JEOL 2200FSC
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Electron dose: 30 e/Å2 / Illumination mode: FLOOD BEAM
LensMagnification: 60000 X (nominal), 90201 X (calibrated) / Cs: 2 mm / Imaging mode: BRIGHT FIELD / Defocus: 1300 - 1700 nm / Energy filter: In-column Omega Filter / Energy window: 0-20 eV
Specimen HolderModel: JEOL
CameraDetector: GATAN ULTRASCAN 4000 (4k x 4k)

Image acquisition

Image acquisitionNumber of digital images: 108

Image processing

ProcessingMethod: single particle reconstruction / Applied symmetry: C1 (asymmetric) / Number of projections: 14582
3D reconstructionSoftware: RELION
CTF correction: phase flipping was performed using XMIPP software
Resolution: 22.8 Å / Resolution method: FSC 0.5 CUT-OFF
Details: Calculated for the converged iteration 10 in Relion using Scipion

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