391D

STRUCTURAL VARIABILITY AND NEW INTERMOLECULAR INTERACTIONS OF Z-DNA IN CRYSTALS OF D(PCPGPCPGPCPG)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6		pH 6.00

Crystal Properties
Matthews coefficient	Solvent content
2.06	40.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 49.87	α = 90
b = 41.26	β = 90
c = 21.91	γ = 97.12

Symmetry
Space Group	P 1 1 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	290	DIFFRACTOMETER	SYNTEX P21		1988-01-01	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OTHER

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	2.75	34.9	99.8	0.064		2		2438		1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION		FREE R-VALUE	2.75	8	2	2325	2316		99.4	0.203	0.199	0.199	0.238	RANDOM

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	744
Solvent Atoms	17
Heterogen Atoms

Software

Software
Software Name	Purpose
X-PLOR	refinement
SYNTEX	data reduction
SYNTEX	data scaling