1OVU

CRYSTAL STRUCTURE OF FOUR-HELIX BUNDLE MODEL di-Co(II)-DF1-L13A (form I)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	298	CO(CH3COO)2 30 mM, buffer tris 100 mM pH 7.5, peg 400 43%, VAPOR DIFFUSION, HANGING DROP, temperature 298K, pH 7.50

Crystal Properties
Matthews coefficient	Solvent content
2.57	53.99

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 89.78	α = 90
b = 147.72	β = 90
c = 37.6	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MARRESEARCH	MIRROR	2001-09-01	M	1.200

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R	1.20000	ELETTRA	5.2R

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	3.1	43.2	97.7	0.236	0.236	5.9	3.6		4679

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.1	3.27	97.7		0.515	0.515	1.9	3.8

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	UNCONVENTIONAL METHOD USING THE GROUP-SUBGROUP RELATION	THROUGHOUT	3.1	20	4679	220	97.21	0.2496	0.24674	0.30439	RANDOM	58.981

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]
-3.12			0.32		2.8

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	25.24
r_scangle_it	11.2
r_dihedral_angle_1_deg	7.466
r_scbond_it	6.974
r_mcangle_it	4.078
r_angle_refined_deg	2.876
r_mcbond_it	2.095
r_symmetry_hbond_refined	0.372
r_nbd_refined	0.355
r_symmetry_vdw_refined	0.349
r_xyhbond_nbd_refined	0.223
r_chiral_restr	0.186
r_bond_refined_d	0.025
r_gen_planes_refined	0.008
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1652
Nucleic Acid Atoms
Solvent Atoms	10
Heterogen Atoms	7

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
REFMAC	refinement
CCP4	data scaling