2WE4

Carbamate kinase from Enterococcus faecalis bound to a sulfate ion and two water molecules, which mimic the substrate carbamyl phosphate


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1B7BPDB ENTRY 1B7B

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP277CRYSTALS WERE OBTAINED AT 4 DEGREES USING THE HANGING DROP VAPOUR DIFFUSION METHOD BY MIXING 1.5 MICROLITERS OF A 10 MG/ML PROTEIN SOLUTION IN 5 MM SODIUM CACODYLATE PH 6.5 AND 1.5 MICROLITERS OF THE RESERVOIR BUFFER CONTAINING 16-20% PEG 8000, 25-100 MM AMMONIUM SULFATE AND 0.1 M SODIUM CACODYLATE PH 6.5
Crystal Properties
Matthews coefficientSolvent content
2.4149

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 80.888α = 90
b = 172.6β = 90
c = 98.627γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARRESEARCH1999-11-20MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID14-2ESRFID14-2

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
12.0250930.096.66.38837223.4
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)
12.022.12820.441.65.2

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1B7B2.022088173443996.10.1950.1950.234RANDOM28.8
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]
-5.2195.436-0.216
RMS Deviations
KeyRefinement Restraint Deviation
c_angle_deg1.15
c_bond_d0.005
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d
RMS Deviations
KeyRefinement Restraint Deviation
c_angle_deg1.15
c_bond_d0.005
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d
c_improper_angle_d_na
c_improper_angle_d_prot
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms9208
Nucleic Acid Atoms
Solvent Atoms907
Heterogen Atoms75

Software

Software
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling