4TQI

Human transthyretin (TTR) complexed with 3-(9H-fluoren-9-ylideneaminooxy)propanoic acid in a dual binding mode

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3GS0

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.7	293	protein: TTR 10 mg/ml + ligand 0.66 milli-M in 0.1 M NaCl, 0.05 M Na acetate, pH 5.5. Precipitant: 70% (30% PEG-4K, 0.2 M imidazole malate, pH 6.0) and 30% (12% MPEG-5K, 0.1 M sodium acetate, pH 5.5). Cryoprotectant: 40% (25 % diethylene glycol, 12.5 % MPD, 37.5 % 2,3-butanediol, 12.5 % 1,4-dioxane), 10% PEG 10K, 0.1 M (mixed sodium propionate, sodium cacodylate, Bis-Tris-propane) (65% component A pH 4; 35% B pH 9.5)

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 43.25	α = 90
b = 86.37	β = 90
c = 63.34	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	CCD	ADSC QUANTUM 315r	convex prefocussing mirror and a Kirkpatrick-Baez pair of focussing mirrors	2013-11-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SOLEIL BEAMLINE PROXIMA 2	0.9801	SOLEIL	PROXIMA 2

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	1.25	43.2	95.7	0.151	0.14	11.11	8.04		63728		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.25	1.32	91.5		1.64	7.2

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	3GS0	1.25	35.72	1.34	63673	3181	95.6	0.174	0.173	0.208	Random

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
f_dihedral_angle_d	14.139
f_angle_d	1.06
f_chiral_restr	0.044
f_bond_d	0.006
f_plane_restr	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1792
Nucleic Acid Atoms
Solvent Atoms	265
Heterogen Atoms	54

Software

Software
Software Name	Purpose
PHENIX	refinement
MxCuBE	data collection
XDS	data scaling
Coot	model building

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.