3CUZ

Atomic Resolution Structures of Escherichia coli and Bacillis anthracis Malate Synthase A: Comparison with Isoform G and Implications for Structure Based Drug Design


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOthertruncated E. coli malate synthase A

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP7.52980.1M Tris pH 7.5, 0.2M calcium acetate, 22%PEG 8K. Prior to collection crystal incubated in similar solution with magnesium acetate instead of calcium acetate, VAPOR DIFFUSION, HANGING DROP, temperature 298K
Crystal Properties
Matthews coefficientSolvent content
2.2745.81

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 52.077α = 90
b = 73.888β = 98.03
c = 71.739γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 3152005-12-07MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONALS BEAMLINE 5.0.20.90ALS5.0.2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.043089.52285742
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.041.0850.9

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 REPLACEMENTTHROUGHOUTE. coli malate synthase A1.0425.6122169081164489.250.153360.15270.16593RANDOM8.172
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]
0.01-0.01
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg32.312
r_dihedral_angle_4_deg13.268
r_dihedral_angle_3_deg11.602
r_dihedral_angle_1_deg5.463
r_sphericity_free2.414
r_rigid_bond_restr1.915
r_scangle_it1.798
r_sphericity_bonded1.626
r_scbond_it1.303
r_angle_refined_deg1.074
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg32.312
r_dihedral_angle_4_deg13.268
r_dihedral_angle_3_deg11.602
r_dihedral_angle_1_deg5.463
r_sphericity_free2.414
r_rigid_bond_restr1.915
r_scangle_it1.798
r_sphericity_bonded1.626
r_scbond_it1.303
r_angle_refined_deg1.074
r_mcangle_it0.901
r_angle_other_deg0.868
r_mcbond_it0.634
r_mcbond_other0.248
r_symmetry_vdw_other0.217
r_nbd_refined0.206
r_nbd_other0.186
r_nbtor_refined0.177
r_symmetry_vdw_refined0.116
r_nbtor_other0.083
r_xyhbond_nbd_refined0.083
r_symmetry_hbond_refined0.065
r_chiral_restr0.064
r_metal_ion_refined0.023
r_bond_refined_d0.006
r_gen_planes_refined0.004
r_bond_other_d0.001
r_gen_planes_other0.001
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4341
Nucleic Acid Atoms
Solvent Atoms637
Heterogen Atoms4

Software

Software
Software NamePurpose
REFMACrefinement
ADSCdata collection
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing