1HKB

CRYSTAL STRUCTURE OF RECOMBINANT HUMAN BRAIN HEXOKINASE TYPE I COMPLEXED WITH GLUCOSE AND GLUCOSE-6-PHOSPHATE


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
otherYEAST HEXOKINASE COMPLEXED WITH GLUCOSE (BARTUNIK, UNPUBLISHED)

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
15.6HEXOKINASE WAS CRYSTALLIZED BY MIXING 20 MG/ML OF PROTEIN SOLUTION WITH 6% PEG 8000, 0.1 M NA CITRATE, PH 5.6, 0.1 M NA ACETATE, 20 MM GLUCOSE-6-PHOSPHATE, AND PRESUMABLE TRACE AMOUNT OF GLUCOSE LEFT AFTER PURIFICATION; THEN SOAKED WITH 10 MM G6P AND 5 MM GLUCOSE.
Crystal Properties
Matthews coefficientSolvent content
3.0352

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 83α = 90
b = 122β = 92
c = 123γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray277IMAGE PLATEMARRESEARCHMIRRORS1997-02-22M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRL BEAMLINE BL7-1SSRLBL7-1

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
12.793896.90.055131.911324362.4
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)
2.82.9880.3231.4

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTYEAST HEXOKINASE COMPLEXED WITH GLUCOSE (BARTUNIK, UNPUBLISHED)2.88255607565396.40.20.20.27RANDOM44
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
x_dihedral_angle_d25.3
x_scangle_it9.38
x_scbond_it6.07
x_mcangle_it5.97
x_mcbond_it3.83
x_angle_deg1.2
x_improper_angle_d0.55
x_bond_d0.007
x_bond_d_na
x_bond_d_prot
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d25.3
x_scangle_it9.38
x_scbond_it6.07
x_mcangle_it5.97
x_mcbond_it3.83
x_angle_deg1.2
x_improper_angle_d0.55
x_bond_d0.007
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms14066
Nucleic Acid Atoms
Solvent Atoms142
Heterogen Atoms116

Software

Software
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing