1RG7

DIHYDROFOLATE REDUCTASE COMPLEXED WITH METHOTREXATE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1RA3PDB ENTRY 1RA3

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
17.2pH 7.2
Crystal Properties
Matthews coefficientSolvent content
2.1141.7

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 37.036α = 90
b = 62.561β = 90
c = 65.63γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray298AREA DETECTORXUONG-HAMLIN MULTIWIRE1992-09-23M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RUH2R

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
12100960.04210311593
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)
22.3960.1652.81.9

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTPDB ENTRY 1RA322011593960.177
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
t_dihedral_angle_d24.2
t_it5.7
t_angle_deg3
t_nbd0.024
t_bond_d0.022
t_trig_c_planes0.02
t_gen_planes0.008
t_incorr_chiral_ct
t_pseud_angle
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1247
Nucleic Acid Atoms
Solvent Atoms84
Heterogen Atoms33

Software

Software
Software NamePurpose
MERLOTphasing
TNTrefinement
UCSDdata reduction
UCSDdata scaling