4L8U

X-ray study of human serum albumin complexed with 9 amino camptothecin


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP7.5293PEG 3350, POTASSIUM PHOSPHATE, PH 7.5, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 293K. 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.
Crystal Properties
Matthews coefficientSolvent content
2.346.56

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 183.933α = 90
b = 37.999β = 104.93
c = 94.598γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 42003-01-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 5.0.31.00ALS5.0.3

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
12.015089.70.04811.138473
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)
12.012.0875.30.2973189

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 DIFFRACTIONMOLECULAR REPLACEMENT2.0145.7141.3638472191589.660.20.19780.242630.1122
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_d15.657
f_angle_d1.185
f_chiral_restr0.079
f_bond_d0.008
f_plane_restr0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4635
Nucleic Acid Atoms
Solvent Atoms428
Heterogen Atoms108

Software

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