2ZKD

Crystal structure of the SRA domain of mouse Np95 in complex with hemi-methylated CpG DNA

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2ZKG	PDB ENTRY 2ZKG

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	293	0.1M sodium citrate (pH5.6), 0.2M sodium acetate, 30% PEG4000, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.587	α = 90
b = 104.036	β = 99.18
c = 65.586	γ = 90

Symmetry
Space Group	C 1 2 1

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	undulator	2008-01-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-5A	1.0	Photon Factory	BL-5A

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	1.6	50	99.1	0.062				77879			20.136

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	1.6	1.66	91.9		0.329		3.2	7102

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 2ZKG	1.6	28.24	73317	3872	99.12	0.15636	0.15483	0.18452	RANDOM	17.825

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]
-0.43		-0.11	0.94		-0.54

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.512
r_dihedral_angle_4_deg	17.096
r_dihedral_angle_3_deg	11.49
r_dihedral_angle_1_deg	5.582
r_scangle_it	1.985
r_angle_refined_deg	1.515
r_scbond_it	1.444
r_angle_other_deg	0.968
r_mcangle_it	0.889
r_mcbond_it	0.776
r_nbd_other	0.226
r_nbd_refined	0.2
r_symmetry_vdw_other	0.194
r_nbtor_refined	0.19
r_symmetry_hbond_refined	0.184
r_mcbond_other	0.151
r_xyhbond_nbd_refined	0.14
r_symmetry_vdw_refined	0.136
r_nbtor_other	0.084
r_chiral_restr	0.083
r_bond_refined_d	0.009
r_gen_planes_refined	0.007
r_bond_other_d	0.002
r_gen_planes_other	0.002
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_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3283
Nucleic Acid Atoms	974
Solvent Atoms	663
Heterogen Atoms	8

Software

Software
Software Name	Purpose
REFMAC	refinement
ADSC	data collection
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	phasing