Experiment: 2H0N

Structure of the fully modified left-handed cyclohexene nucleic acid sequence GTGTACAC

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	481D	1.60 A P 32 1 2 STRUCTURE OF H(GTGTACAC) (NDB CODE HD0001) WAS USED AS MODEL

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	289	CRYSTALS WERE OBTAINED FROM A SOLUTION THAT CONTAINED CACODYLATE BUFFER, LICL, SRCL2, MGCL2, SPERMINE TETRACHLORIDE, AND MPD, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 289K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.455	α = 90
b = 41.455	β = 90
c = 65.58	γ = 120

Symmetry
Space Group	H 3 2

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	MAR CCD 165 mm		2005-03-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.8126	EMBL/DESY, HAMBURG	X11

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	1.53	20	98.6	0.108	9.8	15	3416	3396			11.5667

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)
	1.53	1.58			0.376	5.58		333

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	1.60A P 32 1 2 STRUCTURE OF H(GTGTACAC) (NDB CODE HD0001) WAS USED AS MODEL	1.53	20	3396	3396		98.5	0.2004	0.2004	0.1581	0.1696		20.21

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
80		201.67

RMS Deviations
Key	Refinement Restraint Deviation
s_angle_d	0.025
s_bond_d	0.019
s_anti_bump_dis_restr	0.005
s_from_restr_planes	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	336
Solvent Atoms	62
Heterogen Atoms	8

Software

Software
Software Name	Purpose
SHELXL-97	refinement
MAR345	data collection
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing