3IE3

Structural basis for the binding of the anti-cancer compound 6-(7-Nitro-2,1,3-benzoxadiazol-4-ylthio)hexanol (NBDHEX) to human glutathione S-transferases

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6GSS	PDB ENTRY 6GSS

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	277	1.8M AMMONIUM SULFATE, 100MM MES, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.56	52.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.869	α = 90
b = 89.535	β = 98.04
c = 68.916	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 4r	mirrors	2009-07-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.933	ESRF	ID14-2

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	1.8	29.21	99.1	0.058	0.058	17.4	4	42435	42435	1	1	16.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.86	99		0.178	8.05

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	FOURIER SYNTHESIS	THROUGHOUT	PDB ENTRY 6GSS	1.8	29.21	2	42435	40294	2132	98.49	0.18042	0.18042	0.17887	0.20938	RANDOM	14.588

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]
1.33		-0.12	-1.24		-0.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.161
r_dihedral_angle_4_deg	15.726
r_dihedral_angle_3_deg	10.959
r_dihedral_angle_1_deg	4.538
r_angle_refined_deg	1.373
r_scangle_it	1.116
r_scbond_it	0.726
r_mcangle_it	0.517
r_mcbond_it	0.317
r_nbtor_refined	0.299

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.161
r_dihedral_angle_4_deg	15.726
r_dihedral_angle_3_deg	10.959
r_dihedral_angle_1_deg	4.538
r_angle_refined_deg	1.373
r_scangle_it	1.116
r_scbond_it	0.726
r_mcangle_it	0.517
r_mcbond_it	0.317
r_nbtor_refined	0.299
r_nbd_refined	0.177
r_chiral_restr	0.153
r_symmetry_vdw_refined	0.104
r_symmetry_hbond_refined	0.093
r_xyhbond_nbd_refined	0.085
r_bond_refined_d	0.007
r_gen_planes_refined	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3263
Nucleic Acid Atoms
Solvent Atoms	473
Heterogen Atoms	104

Software

Software
Software Name	Purpose
ADSC	data collection
FFT	model building
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
FFT	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.