3LQA

Crystal structure of clade C gp120 in complex with sCD4 and 21c Fab


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP8.529320% (w/v) PEG monomethyl ether 2000, 5% (v/v) PEG 200, 0.2 M Trimethylamine N-oxide, 0.1 M Tris-HCl pH 8.5 , VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
3.1661.07

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 93.73α = 90
b = 187.93β = 90
c = 151.67γ = 90
Symmetry
Space GroupC 2 2 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 325 mm CCDFlat mirror, double crystal monochromator, vertical and horizontal focussing mirrors2009-06-23MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL12-20.953SSRLBL12-2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Sym 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
13.484790.123.51497511
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
3.43.580.7051.9

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENT3.484149678379.60.2340.322Random 5%, reduced to 0.5% for final rounds of refinement. R values were recorded before the final refinement rounds.101.992
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]
-0.42-1.1071.527
RMS Deviations
KeyRefinement Restraint Deviation
c_angle_d3.475
c_bond_d0.024
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms6889
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms56

Software

Software
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
Blu-Icedata collection
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing