2J7J

Invariance of the zinc finger module: a comparison of the free structure with those in nucleic-acid complexes

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.5		1.6M (NH4)2SO4, 25MM MGSO4, 50MM TRIS.HCL PH8.5

Crystal Properties
Matthews coefficient	Solvent content
3.23	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.954	α = 90
b = 50.954	β = 90
c = 173.431	γ = 120

Symmetry
Space Group	P 61 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 CCD		2003-02-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	0.9791, 1.2824, 1.2828, 1.2651	ESRF	ID29

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	1.65	57.83	100	0.09	16.2	9.5		17038		2	18.03

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	1.65	1.74	100		0.38	2	10

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	NONE	1.65	44.28	2	16099	858	100	0.218	0.217	0.228	RANDOM	19.99

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]
1.42	0.71		1.42		-2.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	4.517
r_scangle_it	2.266
r_scbond_it	1.362
r_mcangle_it	1.196
r_angle_refined_deg	0.878
r_angle_other_deg	0.694
r_mcbond_it	0.62
r_symmetry_vdw_other	0.298
r_nbd_other	0.207
r_nbd_refined	0.183
r_symmetry_vdw_refined	0.139
r_xyhbond_nbd_refined	0.138
r_symmetry_hbond_refined	0.113
r_nbtor_other	0.079
r_chiral_restr	0.055
r_bond_refined_d	0.005
r_gen_planes_refined	0.004
r_gen_planes_other	0.003
r_bond_other_d	0.002
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
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	703
Nucleic Acid Atoms
Solvent Atoms	128
Heterogen Atoms	8

Software

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