Experiment: 1Z7J

Human transthyretin (also called prealbumin) complex with 3, 3',5,5'-tetraiodothyroacetic acid (t4ac)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2ROX	DIMER GENERATED FROM PDB ENTRY 2ROX STRUCTURE WITH ONLY PROTEIN ATOMS FROM RESIDUES 10-125 INCLUDED

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	277	48% ammonium sulfate, 0.l M phosphate buffer, pH 5.50, VAPOR DIFFUSION, HANGING DROP, temperature 4.0K

Crystal Properties
Matthews coefficient	Solvent content
2.26	41.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 43.462	α = 90
b = 85.858	β = 90
c = 65.443	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	293	IMAGE PLATE	RIGAKU RAXIS II	COLLIMATOR	1999-01-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

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	2.2	43.461	94.5	0.0587	15.2777	3.45		11346		1	23.3

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	2.2	2.3	73.7		0.061	2.44	2.37

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	THROUGHOUT	DIMER GENERATED FROM PDB ENTRY 2ROX STRUCTURE WITH ONLY PROTEIN ATOMS FROM RESIDUES 10-125 INCLUDED	2.2	14.87	2	10228	953	78.9	0.173	0.173	0.1736	0.217	0.2196	RANDOM	32.5

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	24.9
c_scbond_it	7.55
c_scangle_it	6.37
c_mcangle_it	2.55
c_mcbond_it	1.52
c_angle_deg	1.2
c_improper_angle_d	0.73
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1807
Nucleic Acid Atoms
Solvent Atoms	86
Heterogen Atoms	44

Software

Software
Software Name	Purpose
SCALEPACK	data scaling
CNS	refinement
CNS	phasing