2XN3

Crystal structure of thyroxine-binding globulin complexed with mefenamic acid

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2RIV	PDB ENTRY 2RIV

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.4		20% PEG3350, PH 5.4

Crystal Properties
Matthews coefficient	Solvent content
2.35	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 172.835	α = 90
b = 41.624	β = 90
c = 56.188	γ = 90

Symmetry
Space Group	P 21 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				2007-10-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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	2.09	21.97	98.2	0.09	14.5	5.2		24692		2

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	2.09	2.21	88.5		0.32	3.3	3.3

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	PDB ENTRY 2RIV	2.09	86.39	23353	1254	99.49	0.21284	0.21038	0.25957	RANDOM	32.786

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]
-0.5			3.2		-2.71

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.172
r_dihedral_angle_3_deg	14.074
r_dihedral_angle_4_deg	14.03
r_dihedral_angle_1_deg	6.317
r_scangle_it	2.698
r_scbond_it	1.69
r_angle_refined_deg	1.258
r_mcangle_it	1.172
r_angle_other_deg	0.904
r_mcbond_it	0.629
r_mcbond_other	0.122
r_chiral_restr	0.07
r_bond_refined_d	0.011
r_gen_planes_refined	0.006
r_gen_planes_other	0.006
r_bond_other_d	0.002
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_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2928
Nucleic Acid Atoms
Solvent Atoms	130
Heterogen Atoms	18

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALEPACK	data scaling
PHASER	phasing