3DO4

Crystal structure of transthyretin variant T60A at acidic pH

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	4.6	298	15% PEG 4000, 0.05M NaAcetate, 0.1M AmmoniumAcetate , pH 4.6, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.24	45.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.586	α = 90
b = 75.907	β = 93.1
c = 107.267	γ = 90

Symmetry
Space Group	P 1 21 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 315		2008-03-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.9729	ESRF	ID29

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	2.4	107.2	99.6	0.069	14.3	4	38055	38055

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)
	2.4	2.53	99.8		0.486	2.9	4.1	5558

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	1F41	2.4	107.2	36139	1900	99.54	0.20517	0.20191	0.26743	RANDOM	50.332

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]
-0.36		-2.4	-2.37		2.47

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.842
r_dihedral_angle_4_deg	22.628
r_dihedral_angle_3_deg	19.527
r_dihedral_angle_1_deg	7.425
r_mcangle_it	3.794
r_scangle_it	3.206
r_mcbond_it	2.287
r_scbond_it	2.254
r_angle_refined_deg	2.215
r_symmetry_hbond_refined	0.472
r_symmetry_vdw_refined	0.35
r_nbtor_refined	0.333
r_nbd_refined	0.267
r_xyhbond_nbd_refined	0.225
r_chiral_restr	0.138
r_bond_refined_d	0.027
r_gen_planes_refined	0.01
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7152
Nucleic Acid Atoms
Solvent Atoms	131
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing