1MLW

Crystal structure of human tryptophan hydroxylase with bound 7,8-dihydro-L-biopterin cofactor and Fe(III)


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1PAHPDB ENTRY 1PAH

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP627716-18% MPEG5000, 25-40 mM MES buffer, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Crystal Properties
Matthews coefficientSolvent content
2.1643.1

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 47.775α = 90
b = 57.334β = 90
c = 109.41γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMARRESEARCH2002-05-05MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL9-10.954SSRLBL9-1

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
11.712099.20.0993293292332923-321.8
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)
1.711.7798.40.009912.593215

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1PAH1.71203379131528134793.30.20550.2296Random54.7325
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]
1.341.027-2.368
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d20.9
c_angle_d1.2
c_improper_angle_d0.79
c_bond_d0.005
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2345
Nucleic Acid Atoms
Solvent Atoms242
Heterogen Atoms18

Software

Software
Software NamePurpose
HKL-2000data collection
SCALEPACKdata scaling
EPMRphasing
CNSrefinement
HKL-2000data reduction