2Q1D

2-keto-3-deoxy-D-arabinonate dehydratase complexed with magnesium and 2,5-dioxopentanoate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.8	293	Na/K phosphate, pH 4.8, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 128.28	α = 90
b = 128.28	β = 90
c = 223.52	γ = 90

Symmetry
Space Group	I 41 2 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	IMAGE PLATE	MAR scanner 345 mm plate	osmic mirrors	2006-11-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	2.7	20	97.3	0.071	11.4	4.1	25301	25301

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	2.7	2.8	93.4		0.281	4.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	FOURIER SYNTHESIS	THROUGHOUT	2Q18	2.7	19.58	24400	24400	1284	99.1	0.22809	0.22638	0.26077	RANDOM	49.816

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]
1.58			1.58		-3.17

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.616
r_dihedral_angle_4_deg	17.532
r_dihedral_angle_3_deg	15.463
r_dihedral_angle_1_deg	5.998
r_scangle_it	2.162
r_angle_refined_deg	1.322
r_scbond_it	1.239
r_mcangle_it	1.084
r_mcbond_it	0.6
r_nbtor_refined	0.313
r_nbd_refined	0.214
r_symmetry_vdw_refined	0.174
r_xyhbond_nbd_refined	0.16
r_symmetry_hbond_refined	0.122
r_chiral_restr	0.082
r_metal_ion_refined	0.053
r_bond_refined_d	0.011
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_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	2227
Nucleic Acid Atoms
Solvent Atoms	52
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
XDS	data reduction
XSCALE	data scaling
XFIT	data reduction