1CD2

LIGAND INDUCED CONFORMATIONAL CHANGES IN THE CRYSTAL STRUCTURES OF PNEUMOCYSTIS CARINII DIHYDROFOLATE REDUCTASE COMPLEXES WITH FOLATE AND NADP+


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1DYR 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1610 ML PROTEIN, 1 MICROLITER 50MM MES, PH 6.5, 100MM KCL, 9 ML 50%(W/W)PEG 2K., pH 6.00
Crystal Properties
Matthews coefficientSolvent content
2.0640.38

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 37.465α = 90
b = 43.131β = 94.76
c = 61.306γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray287IMAGE PLATERIGAKU RAXIS II1994-08-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RU200

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
11.94884.70.0863.09104282
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
2.182.290.30.05233.32.63.6

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENT1DYR2.2821042896.10.19823.78
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
p_transverse_tor21.6
p_staggered_tor21.3
p_planar_tor3.1
p_mcangle_it1.586
p_scangle_it1.527
p_mcbond_it1.06
p_scbond_it0.936
p_multtor_nbd0.271
p_xyhbond_nbd0.27
p_singtor_nbd0.243
RMS Deviations
KeyRefinement Restraint Deviation
p_transverse_tor21.6
p_staggered_tor21.3
p_planar_tor3.1
p_mcangle_it1.586
p_scangle_it1.527
p_mcbond_it1.06
p_scbond_it0.936
p_multtor_nbd0.271
p_xyhbond_nbd0.27
p_singtor_nbd0.243
p_chiral_restr0.24
p_planar_d0.07
p_angle_d0.066
p_bond_d0.027
p_plane_restr0.019
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1686
Nucleic Acid Atoms
Solvent Atoms74
Heterogen Atoms80

Software

Software
Software NamePurpose
PROLSQrefinement
SCALEPACKdata scaling