2J4H

Crystal structure of a H121A Escherichia coli dCTP deaminase mutant enzyme

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.8		VAPOUR DIFFUSION, 34% PEG400, 0.2M MAGNESIUM CHLORIDE, 0.1M HEPES PH6.8, 5MM DCTP

Crystal Properties
Matthews coefficient	Solvent content
2.55	51.39

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.545	α = 90
b = 62.545	β = 90
c = 342.444	γ = 120

Symmetry
Space Group	P 63 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	MARRESEARCH		2003-12-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-2		MAX II	I911-2

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	50	94.2	0.12	4.9	10		11131

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	2.85	75.1		0.47	1.3	5.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	OTHER	THROUGHOUT	2.7	30	10539	563	93.4	0.228	0.225	0.273	RANDOM	29.14

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]
2.28	1.14		2.28		-3.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.765
r_dihedral_angle_4_deg	22.129
r_dihedral_angle_3_deg	16.542
r_dihedral_angle_1_deg	6.884
r_scangle_it	2.093
r_angle_refined_deg	1.579
r_scbond_it	1.303
r_mcangle_it	1.061
r_mcbond_it	0.956
r_angle_other_deg	0.911
r_symmetry_hbond_refined	0.24
r_symmetry_vdw_other	0.224
r_nbd_refined	0.211
r_nbd_other	0.199
r_symmetry_vdw_refined	0.151
r_chiral_restr	0.089
r_nbtor_other	0.087
r_xyhbond_nbd_refined	0.07
r_bond_refined_d	0.013
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.002
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_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	2656
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms	52

Software

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