1HKA

6-HYDROXYMETHYL-7,8-DIHYDROPTERIN PYROPHOSPHOKINASE


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
18.5pH 8.5
Crystal Properties
Matthews coefficientSolvent content
1.6626

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 36.32α = 90
b = 51.98β = 110.12
c = 41.49γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray95IMAGE PLATEMARRESEARCHMIRROR1997-08-20MMAD
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X9B0.9686, 0.9788, 0.9792, 0.9870NSLSX9B

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
11.52095.80.0521.45.6523352-0.5
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)
1.51.5389.90.343.063.81

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMADFREE R IN FIRST STAGE1.5202227795.80.1818RANDOM
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]
Coordinate Error
Structure Solution MethodRefinement High ResolutionRefinement Low Resolution
81503
RMS Deviations
KeyRefinement Restraint Deviation
s_similar_adp_cmpnt0.064
s_non_zero_chiral_vol0.05
s_zero_chiral_vol0.047
s_from_restr_planes0.027
s_angle_d0.024
s_anti_bump_dis_restr0.011
s_bond_d0.008
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1319
Nucleic Acid Atoms
Solvent Atoms236
Heterogen Atoms

Software

Software
Software NamePurpose
PHASESphasing
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling