1JQE

Crystal Structure Analysis of Human Histamine Methyltransferase (Ile105 Polymorphic Variant) Complexed with AdoHcy and Antimalarial Drug Quinacrine


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 DROP4.2289PEG 8000, sodium phosphate, citric acid, sodium chloride, pH 4.2, VAPOR DIFFUSION, HANGING DROP, temperature 289K
Crystal Properties
Matthews coefficientSolvent content
2.3246.9

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 130.34α = 90
b = 130.34β = 90
c = 63.01γ = 120
Symmetry
Space GroupP 6

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDCUSTOM-MADE2000-05-17MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X12C1.1000NSLSX12C

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
11.912594.20.03338.14.5214586202140-319.5
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)
1.911.9443.80.21331036

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).1.91254382243822441292.10.210.1990.1950.235RANDOM34.1
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]
0.610.980.61-1.23
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d22.6
c_mcbond_it1.89
c_angle_deg1.4
c_improper_angle_d0.79
c_bond_d0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4225
Nucleic Acid Atoms
Solvent Atoms377
Heterogen Atoms87

Software

Software
Software NamePurpose
CNSrefinement
MAR345data collection
SCALEPACKdata scaling
CNSphasing