Experiment: 1D41

STABILIZATION OF Z-DNA BY DEMETHYLATION OF THYMINE BASES: 1.3 ANGSTROMS SINGLE-CRYSTAL STRUCTURE OF D(M5CGUAM5CG)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1VTW	ZDFB06 IN WHICH THE METHYL GROUPS OF THE THYMINE BASES WERE REMOVED FROM THE C5 POSITIONS.

Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
1.66	25.71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 17.82	α = 90
b = 30.44	β = 90
c = 44.52	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		IMAGE PLATE	RIGAKU

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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					3869	2870	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	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		ZDFB06 IN WHICH THE METHYL GROUPS OF THE THYMINE BASES WERE REMOVED FROM THE C5 POSITIONS.	1.3		2870			0.208		0.2106

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	238
Solvent Atoms	49
Heterogen Atoms	17

Software

Software
Software Name	Purpose
NUCLSQ	refinement