5DWX

Structural Insights into the Quadruplex-Duplex 3' Interface formed from a Telomeric Repeat - TLOOP

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.8	285	2 M lithium sulphate, 50 mM Tris/HCl pH 8.8 2 mM CuCl2

Crystal Properties
Matthews coefficient	Solvent content
3.1	61.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.83	α = 90
b = 59.83	β = 90
c = 72.31	γ = 90

Symmetry
Space Group	P 4 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	100	CCD	ADSC QUANTUM 315		2011-12-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I04	0.9795	Diamond	I04

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	2.71	42.31	98.2	0.134	12.3	6.6		3820

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	2.71	2.78	97		0.93		6.8

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	1KF1	2.71	20	3632	170	97.61	0.28669	0.28462	0.32705	RANDOM	52.18

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]
0.14			0.14		-0.28

RMS Deviations
Key	Refinement Restraint Deviation
r_long_range_B_other	15.392
r_long_range_B_refined	15.39
r_scangle_other	9.869
r_scbond_it	6.668
r_scbond_other	6.662
r_angle_other_deg	2.338
r_angle_refined_deg	1.285
r_chiral_restr	0.222
r_gen_planes_refined	0.025
r_bond_refined_d	0.006
r_gen_planes_other	0.002
r_bond_other_d	0.001
r_dihedral_angle_1_deg
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	502
Solvent Atoms
Heterogen Atoms	3

Software

Software
Software Name	Purpose
REFMAC	refinement
xia2	data reduction
SCALA	data scaling
PHASER	phasing