3C20

Crystal Structure of Threonine-sensitive Aspartokinase from Methanococcus jannaschii with L-aspartate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	293	14% PEG4000, 0.1M Tris, 0.8M ammonium formate, pH 8.0, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.52	51.12

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.973	α = 90
b = 199.071	β = 90
c = 96.394	γ = 90

Symmetry
Space Group	C 2 2 21

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	MARMOSAIC 300 mm CCD		2006-12-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1.039	APS	17-ID

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.7	50	0.91	0.076	28.3	3.7		30974		2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.7	2.77			0.395	3	3.4

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		THROUGHOUT	PDB code:3C1M	2.7	50	27389	1466	99.75	0.23976	0.23794	0.27298	RANDOM	33.893

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]
1.35			-1.95		0.61

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.122
r_dihedral_angle_3_deg	18.517
r_dihedral_angle_4_deg	12.411
r_dihedral_angle_1_deg	5.711
r_scangle_it	1.428
r_angle_refined_deg	1.183
r_scbond_it	0.798
r_mcangle_it	0.653
r_mcbond_it	0.371
r_nbtor_refined	0.305
r_nbd_refined	0.217
r_symmetry_vdw_refined	0.202
r_symmetry_hbond_refined	0.152
r_xyhbond_nbd_refined	0.131
r_chiral_restr	0.11
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
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	7075
Nucleic Acid Atoms
Solvent Atoms	13
Heterogen Atoms	24

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
CrystalClear	data reduction
CrystalClear	data scaling
PHASER	phasing