2RE1

Crystal structure of aspartokinase alpha and beta subunits

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8	289	20% PEG 1000, Imidazole, Ca(OAc)2, pH 8.0, VAPOR DIFFUSION, SITTING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.51	51.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.806	α = 90
b = 61.806	β = 90
c = 191.901	γ = 90

Symmetry
Space Group	P 41 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 315		2006-12-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97923	APS	19-ID

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	2.75	50	97.9	0.115	31.47	12.5	10415	10201		-3	74.8

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	2.75	2.77	77		0.115	1.98	8	187

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.75	44.46	9653	9653	486	97.89	0.23568	0.23568	0.23369	0.27618	RANDOM	62.689

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]
2.99			2.99		-5.97

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.265
r_dihedral_angle_4_deg	20.467
r_dihedral_angle_3_deg	18.89
r_dihedral_angle_1_deg	6.335
r_scangle_it	2.255
r_angle_refined_deg	1.399
r_scbond_it	1.367
r_mcangle_it	0.961
r_mcbond_it	0.739
r_symmetry_hbond_refined	0.313
r_nbtor_refined	0.309
r_nbd_refined	0.238
r_symmetry_vdw_refined	0.171
r_xyhbond_nbd_refined	0.145
r_chiral_restr	0.098
r_bond_refined_d	0.012
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	2208
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	2

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing