145D

Structure and thermodynamics of nonalternating C/G base pairs in Z-DNA: the 1.3 angstroms crystal structure of the asymmetric hexanucleotide D(M(5)CGGGM(5) CG)/D(M(5)CGCCM(5)CG)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7		pH 7.00, VAPOR DIFFUSION

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 17.865	α = 90
b = 30.822	β = 90
c = 44.797	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		DIFFRACTOMETER	SIEMENS			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	SIEMENS

Refinement

Statistics
Diffraction ID	Structure Solution Method	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)	Mean Isotropic B
X-RAY DIFFRACTION		1.25	8	1.5	5029			0.193		0.21

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	776
Solvent Atoms	144
Heterogen Atoms

Software

Software
Software Name	Purpose
NUCLSQ	refinement