2IMK

Structures of an Insect Epsilon-class Glutathione S-transferase from the Malaria Vector Anopheles Gambiae: Evidence for High DDT-detoxifying Activity


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2IL3PDB ID: 2IL3

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP6.92930.2M sodium iodide and 20% w/v Polyethylene Glycerol 3350 in final pH 6.9, VAPOR DIFFUSION, SITTING DROP, temperature 293K
Crystal Properties
Matthews coefficientSolvent content
1.9837.95

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 49.512α = 90
b = 85.481β = 90
c = 93.265γ = 90
Symmetry
Space GroupP 21 21 2

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray93CCDMARRESEARCH2006-06-11MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 22-ID0.979APS22-ID

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)R Sym 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
11.95089.90.1530.1535.74.6291222912219.63
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
1.91.9755.60.430.0145.72.61755

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 DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ID: 2IL31.95028750287501476900.1990.1990.1960.26RANDOM22.657
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]
-1.06-0.942
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.662
r_dihedral_angle_4_deg19.596
r_dihedral_angle_3_deg17.24
r_dihedral_angle_1_deg7.081
r_scangle_it4.689
r_scbond_it3.152
r_angle_refined_deg1.944
r_mcangle_it1.848
r_mcbond_it1.151
r_nbtor_refined0.307
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg37.662
r_dihedral_angle_4_deg19.596
r_dihedral_angle_3_deg17.24
r_dihedral_angle_1_deg7.081
r_scangle_it4.689
r_scbond_it3.152
r_angle_refined_deg1.944
r_mcangle_it1.848
r_mcbond_it1.151
r_nbtor_refined0.307
r_symmetry_vdw_refined0.242
r_nbd_refined0.223
r_xyhbond_nbd_refined0.199
r_symmetry_hbond_refined0.18
r_chiral_restr0.131
r_bond_refined_d0.024
r_gen_planes_refined0.009
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms3478
Nucleic Acid Atoms
Solvent Atoms166
Heterogen Atoms52

Software

Software
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
HKL-2000data collection
HKL-2000data reduction
HKL-2000data scaling