Experiment: 4FS5

Crystal structure of the Z-DNA hexamer CGCGCG at 500 mM MgCl2

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1IO5	PDB ENTRY 1IO5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	TEMPERATURE CONTROL	7	293	2.0mM DNA, 20mM Na cacodylate, 30% 2-methyl-2,4-pentainediol, 500mM MgCl2, pH 7.0, TEMPERATURE CONTROL, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2	38.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 18.593	α = 90
b = 18.593	β = 90
c = 72.7	γ = 120

Symmetry
Space Group	P 32

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		2008-02-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL38B1	1	SPring-8	BL38B1

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	1.3	24.2	99.2	0.054		6.6	6915	6868			12.3

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	1.3	1.37	99		0.12		6.6	1006

Refinement

Statistics
Diffraction ID	Structure Solution 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-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1IO5	1.3	9.682	0.16	6815	322	98.6	0.2133	0.2109	0.2083	0.2635	0.2667	RABDOM	14.8432

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]
-0.5405			-0.5405		1.0809

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	29.583
f_angle_d	1.849
f_chiral_restr	0.082
f_plane_restr	0.015
f_bond_d	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	240
Solvent Atoms	73
Heterogen Atoms	14

Software

Software
Software Name	Purpose
BSS	data collection
AMoRE	phasing
PHENIX	refinement
MOSFLM	data reduction
SCALA	data scaling