1RX1

DIHYDROFOLATE REDUCTASE (E.C.1.5.1.3) COMPLEXED WITH NICOTINAMIDE ADENINE DINUCLEOTIDE PHOSPHATE (REDUCED FORM)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOtherDHFR-FOLATE-NADP COMPLEX

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
18pH 8.0
Crystal Properties
Matthews coefficientSolvent content
2.1542.8

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 34.455α = 90
b = 45.37β = 90
c = 98.701γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray293AREA DETECTORXUONG-HAMLIN MULTIWIRE1996-07-27M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU

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
12100930.1293.211692
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)
22.0786.30.1871.8

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 DIFFRACTIONDIFFERENCE FOURIERDHFR-FOLATE-NADP COMPLEX22011692930.18
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_nbd0.022
t_bond_d0.019
t_trig_c_planes0.019
t_gen_planes0.007
t_incorr_chiral_ct
t_pseud_angle
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1268
Nucleic Acid Atoms
Solvent Atoms118
Heterogen Atoms49

Software

Software
Software NamePurpose
TNTrefinement
UCSDdata reduction
UCSDdata scaling
TNTphasing