3B6O

Structure of TREX1 in complex with a nucleotide and an inhibitor ion (lithium)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	22% PEG3350, 100 mM MES pH 6.0, 200 mM Li2SO4, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.25	45.36

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.619	α = 90
b = 81.337	β = 103.07
c = 92.706	γ = 90

Symmetry
Space Group	P 1 21 1

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 4	mirrors	2006-05-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2	0.933	ESRF	ID14-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2	50	93.9	0.106	5.9	3.6	65149	65149

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2	2.07	75.6		0.514	1.5	2.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	PDB ID 2o4g	2.1	24.67	57688	51263	2729	95.77	0.21508	0.21336	0.2473	RANDOM	31.667

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]
-0.16		0.1	0.09		0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.816
r_dihedral_angle_3_deg	13.854
r_dihedral_angle_4_deg	10.573
r_dihedral_angle_1_deg	5.117
r_angle_refined_deg	1.056
r_scangle_it	0.946
r_scbond_it	0.561
r_mcangle_it	0.465
r_metal_ion_refined	0.32
r_nbtor_refined	0.29
r_mcbond_it	0.264
r_nbd_refined	0.173
r_xyhbond_nbd_refined	0.126
r_symmetry_vdw_refined	0.124
r_symmetry_hbond_refined	0.066
r_chiral_restr	0.063
r_bond_refined_d	0.006
r_gen_planes_refined	0.002
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6736
Nucleic Acid Atoms
Solvent Atoms	420
Heterogen Atoms	88

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing