6EVV

X-ray structure of the complex between human alpha thrombin and NU172, a duplex/quadruplex 26-mer DNA aptamer, in the presence of potassium ions.

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	Tacsimate 50 % v/v, pH 7.0

Crystal Properties
Matthews coefficient	Solvent content
4.81	74.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.875	α = 90
b = 113.595	β = 90
c = 208.034	γ = 90

Symmetry
Space Group	I 2 2 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	RIGAKU SATURN 944		2016-01-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	2.5	50	93.8	0.079	0.087	0.036	14.7	5.3		26684

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.59	64.7		0.317	0.371	0.187	0.859		3.1

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	1PPB	2.5	104.02	25367	1312	93.74	0.1708	0.1691	0.2054	RANDOM	48.197

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]
-3.8			-2.99		6.79

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	25.335
r_dihedral_angle_4_deg	15.243
r_dihedral_angle_3_deg	11.171
r_dihedral_angle_1_deg	2.748
r_angle_refined_deg	1.482
r_angle_other_deg	0.846
r_chiral_restr	0.18
r_bond_refined_d	0.008
r_gen_planes_refined	0.005
r_bond_other_d	0.001

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	25.335
r_dihedral_angle_4_deg	15.243
r_dihedral_angle_3_deg	11.171
r_dihedral_angle_1_deg	2.748
r_angle_refined_deg	1.482
r_angle_other_deg	0.846
r_chiral_restr	0.18
r_bond_refined_d	0.008
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2356
Nucleic Acid Atoms	543
Solvent Atoms	129
Heterogen Atoms	144

Software

Software
Software Name	Purpose
REFMAC	refinement
CrystalClear	data collection
HKL-2000	data scaling
PDB_EXTRACT	data extraction
HKL-2000	data reduction
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.