4AWN

Structure of recombinant human DNase I (rhDNaseI) in complex with Magnesium and Phosphate.

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3DNI	PDB ENTRY 3DNI

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP			HANGING DROP VAPOR DIFFUSION, 0.2 M MGCL2, 0.1 M BIS-TRIS AT PH 5.5, 25% V/V PEG 3350

Crystal Properties
Matthews coefficient	Solvent content
2.03	39.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.96	α = 90
b = 58.66	β = 90
c = 96.43	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	120	CCD	ADSC QUANTUM 315		2008-04-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1		ESRF	ID23-1

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	1.95	48.22	99.9	0.1	6.88	7.48		18022		2	21.2

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	1.95	2.06	99.6		0.57	1.32	7.55

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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3DNI	1.95	50.125	17963	910	99.872	0.169	0.1662	0.2185	RANDOM	23.84

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]
-2.174			1.521		0.652

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	41.771
r_dihedral_angle_4_deg	17.287
r_dihedral_angle_3_deg	13.157
r_dihedral_angle_1_deg	6.647
r_scangle_it	2.976
r_scbond_it	1.902
r_angle_refined_deg	1.428
r_mcangle_it	1.37
r_mcbond_it	0.756
r_nbtor_refined	0.314
r_nbd_refined	0.207
r_symmetry_vdw_refined	0.191
r_symmetry_hbond_refined	0.185
r_metal_ion_refined	0.179
r_xyhbond_nbd_refined	0.132
r_chiral_restr	0.102
r_bond_refined_d	0.013
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_other
r_symmetry_vdw_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	2065
Nucleic Acid Atoms
Solvent Atoms	208
Heterogen Atoms	64

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALEPACK	data scaling
MOLREP	phasing