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)
Type	Source	Accession Code	Details
experimental model	PDB	2IL3	PDB ID: 2IL3

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.9	293	0.2M sodium iodide and 20% w/v Polyethylene Glycerol 3350 in final pH 6.9, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.98	37.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.512	α = 90
b = 85.481	β = 90
c = 93.265	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	93	CCD	MARRESEARCH		2006-06-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	0.979	APS	22-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)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.9	50	89.9	0.153	0.153	5.7	4.6	29122	29122			19.63

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)	Redundancy	Number Unique Reflections (All)
	1.9	1.97	55.6		0.43	0.014	5.7	2.6	1755

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ID: 2IL3	1.9	50	28750	28750	1476	90	0.199	0.199	0.196	0.26	RANDOM	22.657

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			-0.94		2

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.662
r_dihedral_angle_4_deg	19.596
r_dihedral_angle_3_deg	17.24
r_dihedral_angle_1_deg	7.081
r_scangle_it	4.689
r_scbond_it	3.152
r_angle_refined_deg	1.944
r_mcangle_it	1.848
r_mcbond_it	1.151
r_nbtor_refined	0.307

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.662
r_dihedral_angle_4_deg	19.596
r_dihedral_angle_3_deg	17.24
r_dihedral_angle_1_deg	7.081
r_scangle_it	4.689
r_scbond_it	3.152
r_angle_refined_deg	1.944
r_mcangle_it	1.848
r_mcbond_it	1.151
r_nbtor_refined	0.307
r_symmetry_vdw_refined	0.242
r_nbd_refined	0.223
r_xyhbond_nbd_refined	0.199
r_symmetry_hbond_refined	0.18
r_chiral_restr	0.131
r_bond_refined_d	0.024
r_gen_planes_refined	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3478
Nucleic Acid Atoms
Solvent Atoms	166
Heterogen Atoms	52

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.