1XZX

Thyroxine-Thyroid Hormone Receptor Interactions

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		TRb-TRIAC

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.2	279	sodium acetate, cacodylate, pH 7.2, VAPOR DIFFUSION, HANGING DROP, temperature 279K

Crystal Properties
Matthews coefficient	Solvent content
3.17	60.95

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.764	α = 90
b = 68.764	β = 90
c = 130.943	γ = 120

Symmetry
Space Group	P 31 2 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		2001-01-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	1.09720	ALS	5.0.2

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	2.3	20	99.8	0.092			16507	16507		-3

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)
1	2.3	2.34	99.1		0.692			791

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	TRb-TRIAC	2.5	19.84	12903	12903	1293	100	0.191	0.191	0.185	0.244	RANDOM	46.305

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]
0.88	0.44		0.88		-1.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	7.603
r_scangle_it	5.876
r_scbond_it	3.652
r_mcangle_it	2.408
r_angle_refined_deg	2.31
r_mcbond_it	1.296
r_angle_other_deg	1.145
r_symmetry_vdw_refined	0.311
r_symmetry_vdw_other	0.294
r_symmetry_hbond_refined	0.291
r_nbd_refined	0.287
r_xyhbond_nbd_refined	0.275
r_nbd_other	0.247
r_chiral_restr	0.151
r_nbtor_other	0.098
r_bond_refined_d	0.031
r_gen_planes_other	0.019
r_gen_planes_refined	0.015
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1916
Nucleic Acid Atoms
Solvent Atoms	66
Heterogen Atoms	29

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
EPMR	phasing