6PU4

MicroED structure of proteinase K recorded on Falcon III


ELECTRON CRYSTALLOGRAPHY

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 67.48α = 90
b = 67.48β = 90
c = 101.75γ = 90
Symmetry
Space GroupP 43 21 2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.7
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.72.8397.21.9720.1690.93.8

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
ELECTRON CRYSTALLOGRAPHYMOLECULAR REPLACEMENTTHROUGHOUTPDB entry 5K7S2.127.661378889796.2110.2240.22060.267Copied from PDB entry 5K7S11.979
Temperature Factor Modeling
Anisotropic B[1][1]Anisotropic B[1][2]Anisotropic B[1][3]Anisotropic B[2][2]Anisotropic B[2][3]Anisotropic B[3][3]
0.3170.317-0.634
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.3
r_dihedral_angle_4_deg20.655
r_dihedral_angle_3_deg15.578
r_dihedral_angle_1_deg6.841
r_lrange_it2.969
r_lrange_other2.963
r_scangle_it1.511
r_scangle_other1.511
r_angle_refined_deg1.472
r_angle_other_deg1.406
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.3
r_dihedral_angle_4_deg20.655
r_dihedral_angle_3_deg15.578
r_dihedral_angle_1_deg6.841
r_lrange_it2.969
r_lrange_other2.963
r_scangle_it1.511
r_scangle_other1.511
r_angle_refined_deg1.472
r_angle_other_deg1.406
r_mcangle_it0.983
r_mcangle_other0.982
r_scbond_it0.893
r_scbond_other0.893
r_mcbond_it0.613
r_mcbond_other0.613
r_metal_ion_refined0.237
r_nbd_refined0.22
r_nbd_other0.207
r_symmetry_nbd_other0.199
r_symmetry_xyhbond_nbd_refined0.192
r_symmetry_nbd_refined0.173
r_nbtor_refined0.17
r_xyhbond_nbd_refined0.154
r_symmetry_nbtor_other0.081
r_chiral_restr0.06
r_bond_refined_d0.008
r_gen_planes_refined0.007
r_gen_planes_other0.001
r_bond_other_d

Software

Software
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
Aimlessdata scaling
MOLREPphasing
Sample
Proteinase K
Specimen Preparation
Sample Aggregation State3D ARRAY
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodCRYSTALLOGRAPHY
Number of Particles
Reported Resolution (Å)2.1
Resolution MethodDIFFRACTION PATTERN/LAYERLINES
Other Details
Refinement Type
Symmetry Type3D CRYSTAL
Space Group Name
Length a67.4801
Length b67.4801
Length c67.4801
Angle Alpha90
Angle Beta90
Angle Gamma90
Map-Model Fitting and Refinement
Id1 (5K7S)
Refinement SpaceRECIPROCAL
Refinement ProtocolOTHER
Refinement Target
Overall B Value13.054
Fitting Procedure
DetailsElectron scattering factors
Data Acquisition
Detector TypeFEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)0.01
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TALOS ARCTICA
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeDIFFRACTION
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGMOLREP11.6.04
MODEL REFINEMENTREFMAC5.8.0238
MOLECULAR REPLACEMENTMOLREP11.6.04
SYMMETRY DETERMINATIONPOINTLESS1.11.19
CRYSTALLOGRAPHY MERGINGAIMLESS0.7.4
RECONSTRUCTIONREFMAC5.8.0238
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
NONE