4WR9

Crystal Structure of Surfactant Protein-A DED Mutant (E171D/P175E/K203D)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3PAK 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6290The crystals were grown in hanging drops with 10 mM sodium cacodylate (pH 6.0), 80 mM calcium acetate, 0-10% glycerol, and 4-10% (w/v) PEG 20,000 as the reservoir. Before freezing for x-ray data collection, crystals were soaked in reservoir solution of 10 mM calcium acetate without glycerol, but with stepwise additions of 5, 10, and 15% 2-methyl-2,4-pentanediol
Crystal Properties
Matthews coefficientSolvent content
3.6466.23

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 97.19α = 90
b = 97.19β = 90
c = 44.629γ = 120
Symmetry
Space GroupP 63

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IV2012-10-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU3001.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (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
12.31599.90.06918.35.61082937.92
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.32.3899.90.4654.81089

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONFOURIER SYNTHESISFREE R-VALUE3pak2.30114.64910619107597.940.16890.16520.200349.1631
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_d16.24
f_angle_d0.759
f_chiral_restr0.029
f_bond_d0.013
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1143
Nucleic Acid Atoms
Solvent Atoms73
Heterogen Atoms3

Software

Software
Software NamePurpose
PHENIXrefinement
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction