2GWE

Crystal structure of D(G4T4G4) with six quadruplexes in the asymmetric unit.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7	285	MAGNESIUM CHLORIDE, POTASSIUM CHLORIDE, SPERMINE TETRAHYDROCHLORIDE, DNA, BR-ACO-19, MPD, POTASSIUM CACODYLATE BUFFER, VAPOR DIFFUSION, HANGING DROP, temperature 285K, pH 7.00

Crystal Properties
Matthews coefficient	Solvent content
1.93	36.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.645	α = 90
b = 78.881	β = 90
c = 97.011	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	ADSC QUANTUM 210	A CYLINDRICAL GRAZING INCIDENCE MIRROR	2003-04-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29		ESRF	ID29

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	2.2	17	97.5	0.075	15.46	4.95		18290		-2

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	2.28	95.9		0.263	5.4

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 (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	THE FIRST QUADRUPLEX OF NDB ENTRY CODE UD0014 OR PDB ENTRY CODE 1JRN WITH NOTHING ELSE.	2.2	8	4	17881	1787	83.4	0.233	0.229		0.318	RANDOM	14.91

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
		3229

RMS Deviations
Key	Refinement Restraint Deviation
s_similar_adp_cmpnt	0.077
s_non_zero_chiral_vol	0.04
s_angle_d	0.018
s_anti_bump_dis_restr	0.01
s_from_restr_planes	0.006
s_bond_d	0.003
s_similar_dist
s_zero_chiral_vol
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	3036
Solvent Atoms	163
Heterogen Atoms	30

Software

Software
Software Name	Purpose
SHELXL-97	refinement
DENZO	data reduction
CNS	refinement
ADSC	data collection
EPMR	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.