2BZS

Binding of anti-cancer prodrug CB1954 to the activating enzyme NQO2 revealed by the crystal structure of their complex.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1QR2	PDB ENTRY 1QR2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		1.66M AMM. SULF IN 100MM NA-HEPES PH 7 AND 12MICROM FAD, 1MM DTT

Crystal Properties
Matthews coefficient	Solvent content
2.2	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.83	α = 90
b = 106.11	β = 90
c = 61.65	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	93	IMAGE PLATE	RIGAKU RAXIS IV	VARIMAX HF	2005-04-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2	30	99.4	0.08	13.9	6.4		36382			30.54

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	2	2.11	96.3		0.4	3	4.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1QR2	2	30	34512	1813	99.4	0.196	0.193	0.247	RANDOM	32.47

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]
3.08			-2.89		-0.2

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.426
r_dihedral_angle_4_deg	23.974
r_dihedral_angle_3_deg	14.808
r_dihedral_angle_1_deg	7.386
r_scangle_it	4.066
r_scbond_it	2.606
r_angle_refined_deg	1.865
r_mcangle_it	1.782
r_mcbond_it	1.134
r_symmetry_hbond_refined	0.698
r_nbtor_refined	0.314
r_symmetry_vdw_refined	0.309
r_nbd_refined	0.219
r_xyhbond_nbd_refined	0.212
r_chiral_restr	0.119
r_bond_refined_d	0.017
r_gen_planes_refined	0.009
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3648
Nucleic Acid Atoms
Solvent Atoms	299
Heterogen Atoms	144

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling