1JQD

Crystal Structure Analysis of Human Histamine Methyltransferase (Thr105 Polymorphic Variant) Complexed with AdoHcy and Histamine


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOtherPartially refined 3.3A SeMet HNMT/AdoMet/Histamine structure solved by MAD phasing (crystal grown at pH 7.5).

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP5.6289PEG 6000, isopropanol, sodium citrate, glycerol, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Crystal Properties
Matthews coefficientSolvent content
2.4148.87

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 131.75α = 90
b = 131.75β = 90
c = 64.03γ = 120
Symmetry
Space GroupP 6

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARRESEARCH1999-12-02MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 17-ID1.2000APS17-ID

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
12.281898.90.07925.27.72905728605-323.7
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)
2.282.3689.80.26610.58.22582

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-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONFOURIER SYNTHESISTHROUGHOUTPartially refined 3.3A SeMet HNMT/AdoMet/Histamine structure solved by MAD phasing (crystal grown at pH 7.5).2.28182521325213278696.60.2110.2110.2050.257RANDOM35.3
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]
0.913.280.91-1.81
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d22.9
c_mcbond_it2.57
c_angle_deg1.3
c_improper_angle_d0.88
c_bond_d0.007
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4385
Nucleic Acid Atoms
Solvent Atoms303
Heterogen Atoms68

Software

Software
Software NamePurpose
CNSrefinement
MAR345data collection
SCALEPACKdata scaling
CNSphasing