6M9J

Racemic-GSTSTA from degenerate octameric repeats in InaZ, residues 707-712


ELECTRON CRYSTALLOGRAPHY

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 14.03α = 90
b = 9.22β = 104.48
c = 20.77γ = 90
Symmetry
Space GroupP 1 21/c 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11electron2017-11-27

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)CC (Half)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
10.97.62977.60.1280.1510.9915.463.401290646.14
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rrim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
10.90.9279.90.3320.3870.9622.523.165

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
ELECTRON CRYSTALLOGRAPHYTHROUGHOUT0.97.6291.4289629077.430.23420.23250.25183.552
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]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d7.023
f_angle_d1.119
f_chiral_restr0.071
f_bond_d0.008
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms36
Nucleic Acid Atoms
Solvent Atoms3
Heterogen Atoms

Software

Software
Software NamePurpose
XSCALEdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
XDSdata reduction
SHELXDphasing
Sample
L-GSTSTA from ice nucleation protein, inaZ, and its enantiomer, D-GSTSTA
Specimen Preparation
Sample Aggregation State3D ARRAY
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodCRYSTALLOGRAPHY
Number of Particles
Reported Resolution (Å)
Resolution MethodDIFFRACTION PATTERN/LAYERLINES
Other Details
Refinement Type
Symmetry Type3D CRYSTAL
Space Group Name
Length a14.03
Length b9.22
Length c9.22
Angle Alpha90
Angle Beta104.5
Angle Gamma90
Map-Model Fitting and Refinement
Id1
Refinement SpaceRECIPROCAL
Refinement ProtocolAB INITIO MODEL
Refinement Targetmaximum likelihood
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeTVIPS TEMCAM-F416 (4k x 4k)
Electron Dose (electrons/Å**2)0.01
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TECNAI F20
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeDIFFRACTION
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGCoot0.8.9.1
CRYSTALLOGRAPHY MERGINGXSCALE
RECONSTRUCTIONSHELXD
MODEL REFINEMENTPHENIX1.12_2829
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
NONE