4LB9

X-ray study of human serum albumin complexed with etoposide


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.5293PEG 3350, POTASSIUM PHOSPHATE, Crystals of the complexes were obtained by standard vapor equilibration methods with conditions optimized by screens varying protein concentration, pH, drug molar ratios, centered on the original crystallization hit using protocols described previously for the monoclinic [Carter, et al., Eur. J. Biochemistry (1994) 226: 1049-1052] and triclinic [Sugo, et al., Protein Eng (1999) 12: 439-446] crystal forms., pH 7.5, vapor diffusion, SITTING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
2.4148.89

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 172.543α = 90
b = 38.677β = 104.56
c = 99.221γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATERIGAKU RAXIS IVCONFOCAL OPTICS2003-01-01MSINGLE 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
12.73086.60.06812.715546
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)
12.72.883.50.5221483

Refinement

Statistics
Diffraction IDStructure Solution 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
X-RAY DIFFRACTIONMERLOT2.725.6791.341554076486.640.19720.19450.248933.1846
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_d16.992
f_angle_d1.024
f_chiral_restr0.072
f_bond_d0.005
f_plane_restr0.004
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4635
Nucleic Acid Atoms
Solvent Atoms68
Heterogen Atoms106

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
CrystalCleardata collection
MERLOTphasing