2C2G

Crystal structure of Threonine Synthase from Arabidopsis thaliana in complex with its cofactor pyridoxal phosphate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		1 M LICL, 13% (W/V) PEG 6000, 5 MM DTT, 0.1 M MES-KOH, pH 6.50

Crystal Properties
Matthews coefficient	Solvent content
2.33	46.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.626	α = 108.96
b = 61.014	β = 102
c = 76.678	γ = 107.36

Symmetry
Space Group	P 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	IMAGE PLATE	MAR scanner 345 mm plate	MIRRORS	2000-02-20	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	2.6	20	95.5	0.05	6.8	2		25774

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	2.61	2.75	93.5		0.29	2.5	2

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 1E5X	2.61	20.63	24429	1311	100	0.191	0.187	0.264	RANDOM	20.6

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]
2.69	1.89	0.74	0.29	-0.8	-2.08

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	22.89
r_dihedral_angle_4_deg	7.553
r_dihedral_angle_3_deg	7.134
r_scangle_it	3.451
r_angle_refined_deg	2.708
r_scbond_it	2.308
r_mcangle_it	1.552
r_dihedral_angle_1_deg	1.046
r_mcbond_it	0.885
r_nbtor_refined	0.332
r_nbd_refined	0.271
r_symmetry_vdw_refined	0.263
r_chiral_restr	0.203
r_xyhbond_nbd_refined	0.189
r_symmetry_hbond_refined	0.184
r_bond_refined_d	0.022
r_gen_planes_refined	0.001
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_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	6864
Nucleic Acid Atoms
Solvent Atoms	121
Heterogen Atoms	30

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling