Experiment: 2QX6

Crystal Structure of Quinone Reductase II

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	BisTris, NaCl, Ammonium sulfate, FAD, DTT, Melatonin, Glycerol, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.43	49.37

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 56.53	α = 90
b = 83.617	β = 90
c = 106.274	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	100	CCD	MARMOSAIC 225 mm CCD		2006-06-30	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-BM	0.9	APS	22-BM

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	1.75	20	93.5	0.072	8.62			50120		-3	27.179

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	1.75	1.86	71.5		0.632	1.2	29.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION		1.75	20	50120	2506	97.3	0.191	0.1921	0.22	0.2198	27.043

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]
6.547			2.09		-8.637

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.3
c_angle_d	1.444
c_improper_angle_d	0.99
c_bond_d	0.019

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3648
Nucleic Acid Atoms
Solvent Atoms	331
Heterogen Atoms	142

Software

Software
Software Name	Purpose
XSCALE	data processing
CNS	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
XSCALE	data scaling