1A52

ESTROGEN RECEPTOR ALPHA LIGAND-BINDING DOMAIN COMPLEXED TO ESTRADIOL

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.6	291	WELL: 100 MM TRIS PH 7.6 480 MM MGCL2 10 MM MGOAC2 10% ETHYLENE GLYCOL 5% PEG 4000. PROTEIN STOCK: 18 MG/ML ERLBD 25 MM TRIS PH 7.4 200 MM NACL 1 MM EDTA 1 MM DTT 20 MICROMOLAR ESTRADIOL 0.1% BETA-OCTYL GLUCOSIDE AT 18 CELSIUS., vapor diffusion - hanging drop, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.97	58.65

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 147	α = 90
b = 147	β = 90
c = 168.9	γ = 120

Symmetry
Space Group	H 3 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	IMAGE PLATE	RIGAKU	SPHERICAL MIRRORS	1997-06-19	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X4A		NSLS	X4A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.8	50	99.1	0.068	0.075	19.3			33401

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.8	2.9	98.6		0.404	0.329	2.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MIR	THROUGHOUT	2.8	50	2	15339	1539	87.7	0.223	0.223	0.274	RANDOM	25.43

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]

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	17.01
c_angle_deg	1.68
c_improper_angle_d	0.934
c_bond_d	0.0014
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot
c_mcbond_it
c_mcangle_it
c_scbond_it
c_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3827
Nucleic Acid Atoms
Solvent Atoms	30
Heterogen Atoms	46

Software

Software
Software Name	Purpose
MLPHARE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling