1RX7

STRUCTURE OF DIHYDROFOLATE REDUCTASE COMPLEXED WITH FOLATE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1RA2PDB ENTRY 1RA2

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16.5pH 6.5
Crystal Properties
Matthews coefficientSolvent content
2.1842.8

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 34.99α = 90
b = 45.308β = 90
c = 101.138γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray293AREA DETECTORXUONG-HAMLIN MULTIWIRE1995-06-22M
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
12.3100870.0788.32.16569
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)
2.32.48810.1752.11.4

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 1RA22.3206569870.181
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_d25
t_it6
t_angle_deg2.98
t_bond_d0.022
t_trig_c_planes0.018
t_nbd0.017
t_gen_planes0.006
t_incorr_chiral_ct
t_pseud_angle
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1268
Nucleic Acid Atoms
Solvent Atoms23
Heterogen Atoms32

Software

Software
Software NamePurpose
MERLOTphasing
TNTrefinement
UCSDdata reduction
UCSDdata scaling