3IFI | pdb_00003ifi

2'-SeMe-dG modified octamer DNA

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6	293	10% v / v MPD, 40 mM Na Cacodylate pH 6.0, 12 mM Spermine tetra-HCl, 80 mM Strontium Chloride, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.07	40.7

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.641	α = 90
b = 41.641	β = 90
c = 24.112	γ = 90

Symmetry
Space Group	P 43 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	99	CCD	ADSC QUANTUM 210		2009-03-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X12C	0.9795	NSLS	X12C

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	1.2	50	90.2	0.065	52.8	13	7069	6376

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	1.2	1.22	47.1		0.32	4.16	3.2	160

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1DNS	1.2	29.45	6693	5901	295	88.17	0.203	0.203	0.202	0.221	0.2554	RANDOM	13.545

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]
0.05			0.05		-0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_angle_refined_deg	1.144
r_scangle_it	1.062
r_scbond_it	0.689
r_nbtor_refined	0.264
r_symmetry_vdw_refined	0.183
r_nbd_refined	0.127
r_symmetry_hbond_refined	0.124
r_xyhbond_nbd_refined	0.095
r_chiral_restr	0.058
r_gen_planes_refined	0.008
r_bond_refined_d	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms
Nucleic Acid Atoms	163
Solvent Atoms	46
Heterogen Atoms

Software

Software
Software Name	Purpose
CBASS	data collection
PHASES	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling