2FKB

Crystal structure of a putative enzyme (possible Nudix hydrolase) from Escherichia Coli K12

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	291	1.8M Ammonium Sulphate, 0.1M Na Acetate pH4.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3.56	65.41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.701	α = 90
b = 134.884	β = 90
c = 145.246	γ = 90

Symmetry
Space Group	I 2 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	CCD	ADSC QUANTUM 4	mirrors	2005-08-31	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.9795, 0.97943, 0.97956	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	50	97.6	0.064	33	8.6	60149	58739	2	2

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	2.07	82.4		0.6	2.3	5.9

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	2	50	58739	55765	2974	98.34	0.201	0.201	0.19908	0.1979	0.23053	0.2261	RANDOM	40.936

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]
3.22			-1.1		-2.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.056
r_dihedral_angle_4_deg	18.29
r_dihedral_angle_3_deg	16.013
r_dihedral_angle_1_deg	6.458
r_scangle_it	3.885
r_scbond_it	2.56
r_mcangle_it	1.8
r_angle_refined_deg	1.519
r_mcbond_it	1.221
r_nbtor_refined	0.3
r_xyhbond_nbd_refined	0.239
r_nbd_refined	0.213
r_symmetry_hbond_refined	0.188
r_symmetry_vdw_refined	0.165
r_chiral_restr	0.122
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
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	3882
Nucleic Acid Atoms
Solvent Atoms	328
Heterogen Atoms	101

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data scaling
SOLVE	phasing
RESOLVE	phasing