1RQ9

Crystal structures of a Multidrug-Resistant HIV-1 Protease Reveal an Expanded Active Site Cavity


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOtherhigher resolution structure of the same protein

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.5295MES, sodium chloride, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K
Crystal Properties
Matthews coefficientSolvent content
2.4449.5

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 45.097α = 90
b = 45.097β = 90
c = 102.957γ = 90
Symmetry
Space GroupP 41

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IVOsmic Mirrors2003-03-13MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU FR-D1.5418

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (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
12.523.3697.60.170.17733325.3

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUThigher resolution structure of the same protein2.623.36264223211000.2540.2540.2540.335RANDOM40.3
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]
8.288.28-16.56
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d26.3
c_scangle_it2.96
c_scbond_it2.61
c_angle_deg1.5
c_mcangle_it1.2
c_improper_angle_d0.89
c_mcbond_it0.68
c_bond_d0.01
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1510
Nucleic Acid Atoms
Solvent Atoms41
Heterogen Atoms40

Software

Software
Software NamePurpose
CNSrefinement
CrystalCleardata reduction
d*TREKdata scaling
CCP4phasing