1B4E

X-ray structure of 5-aminolevulinic acid dehydratase complexed with the inhibitor levulinic acid


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelOtherYEAST ALAD

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8.27MG/ML ENZYME AND 2 - 5 % SATURATED AMMONIUM SULPHATE AS PRECIPITANT. 0.2 M TRIS-HCL USED TO BUFFER THE PH BETWEEN 8.1 AND 8.4. 15MM LEVULINIC ACID, 40UM ZINC SULPHATE AND 4MM BETA- MERCAPTOETHANOL WERE PRESENT., pH 8.2, VAPOR DIFFUSION, HANGING DROP
Crystal Properties
Matthews coefficientSolvent content
471

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 126.7α = 90
b = 126.7β = 90
c = 141.6γ = 90
Symmetry
Space GroupI 4 2 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100IMAGE PLATEMAR scanner 300 mm plate1994-03-15MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSRS BEAMLINE PX9.6SRSPX9.6

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
12885.80.0638.82.533275
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)
122.170.80.2972.11.6

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTYEAST ALAD28332750.1880.255EVERY 20TH REFLECTION
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
o_angle_deg0.032
o_bond_d0.016
o_bond_d_na
o_bond_d_prot
o_angle_d
o_angle_d_na
o_angle_d_prot
o_angle_deg_na
o_angle_deg_prot
o_dihedral_angle_d
RMS Deviations
KeyRefinement Restraint Deviation
o_angle_deg0.032
o_bond_d0.016
o_bond_d_na
o_bond_d_prot
o_angle_d
o_angle_d_na
o_angle_d_prot
o_angle_deg_na
o_angle_deg_prot
o_dihedral_angle_d
o_dihedral_angle_d_na
o_dihedral_angle_d_prot
o_improper_angle_d
o_improper_angle_d_na
o_improper_angle_d_prot
o_mcbond_it
o_mcangle_it
o_scbond_it
o_scangle_it
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2479
Nucleic Acid Atoms
Solvent Atoms371
Heterogen Atoms43

Software

Software
Software NamePurpose
ALMNmodel building
TFFCmodel building
RESTRAINrefinement
MOSFLMdata reduction
CCP4data scaling
ROTAVATAdata scaling
CCP4phasing
TFFCphasing