3W3B | pdb_00003w3b

Crystal structure of wild-type human transthyretin

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1TTA	PDB ENTRY 1TTA

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	293	pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.04	39.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.42	α = 90
b = 83.49	β = 90
c = 63.5	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		CCD	MAR CCD 165 mm			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LNLS BEAMLINE D03B-MX1	1.425	LNLS	D03B-MX1

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	1.9	63.5	97	0.057	0.057	19.9	3.2	17774	17774

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	2	93.7		0.254	0.254	0.302	0.162	2.8	3.1	2460

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1TTA	1.9	21.85	17746	909	96.37	0.1823	0.1796	0.1883	0.2354	0.2494	RANDOM	29.4994

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]
-0.44			-0.5		0.94

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.43
r_dihedral_angle_4_deg	20.137
r_dihedral_angle_3_deg	17.616
r_dihedral_angle_1_deg	6.999
r_angle_refined_deg	2.03
r_angle_other_deg	0.919
r_chiral_restr	0.122
r_bond_refined_d	0.019
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1785
Nucleic Acid Atoms
Solvent Atoms	149
Heterogen Atoms

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction