Experiment: 2QNN

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	293	2.25M NaCl, 0.1M Bis-Tris, pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.65	53.56

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.384	α = 90
b = 86.179	β = 90
c = 46.29	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	113	CCD	MAR CCD 165 mm	Double crystal monochromator wit 2 sets of mirrors	2007-03-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.2	0.97803	BESSY	14.2

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	1.48	25	99.5	0.048	4.8	23.5	3.5	38945	38945			13.3

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	1.48	1.51	96.4		0.287	28.7	3.71	2.7	1863

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	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	AB INITIO	FREE R	pdb entry 2PQZ	1.48	10	2	4	36820	36820	1924	94.7	0.1837	0.1699	0.1695	0.1925	RANDOM

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
6	1577	1698.5

RMS Deviations
Key	Refinement Restraint Deviation
s_zero_chiral_vol	0.063
s_non_zero_chiral_vol	0.059
s_similar_adp_cmpnt	0.051
s_anti_bump_dis_restr	0.029
s_from_restr_planes	0.0284
s_angle_d	0.027
s_bond_d	0.009
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1498
Nucleic Acid Atoms
Solvent Atoms	134
Heterogen Atoms	67

Software

Software
Software Name	Purpose
SHELX	model building
SHELXL-97	refinement
MAR345dtb	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.