2IMI

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	4.6	293	0.2M amonium acetate, 0.1M sodium acetate pH4.6 and 30% w/v Polyethylene Glycerol 4000, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.91	35.58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.065	α = 90
b = 83.793	β = 90
c = 92.488	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		2006-02-27	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	1.4	50	100	0.089	0.089	10	6.5	76216	76216			13.63

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)
	1.4	1.45	100		0.517	0.028	10	4.7	7519

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	1.4	50	75783	75783	3803	99.97	0.175	0.175	0.174	0.193	RANDOM	15.456

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]
0.14			-0.15		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.031
r_dihedral_angle_4_deg	15.658
r_dihedral_angle_3_deg	12.713
r_dihedral_angle_1_deg	5.19
r_scangle_it	3.02
r_scbond_it	2.073
r_angle_refined_deg	1.259
r_mcangle_it	1.176
r_mcbond_it	0.667
r_nbtor_refined	0.31

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.031
r_dihedral_angle_4_deg	15.658
r_dihedral_angle_3_deg	12.713
r_dihedral_angle_1_deg	5.19
r_scangle_it	3.02
r_scbond_it	2.073
r_angle_refined_deg	1.259
r_mcangle_it	1.176
r_mcbond_it	0.667
r_nbtor_refined	0.31
r_nbd_refined	0.201
r_symmetry_vdw_refined	0.189
r_symmetry_hbond_refined	0.131
r_xyhbond_nbd_refined	0.124
r_chiral_restr	0.081
r_bond_refined_d	0.008
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3487
Nucleic Acid Atoms
Solvent Atoms	421
Heterogen Atoms	40

Software

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

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.