Experiment: 2XSD

Crystal Structure of the dimeric Oct-6 (Pou3f1) POU domain bound to palindromic MORE DNA

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1E3O	PDB ENTRY 1E3O

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.6		RESERVOIR: 0.2M MGCL2, 14%PEG4000 AND 0.1 SODIUM CITRATE PH5.6 PROTEIN-DNA COMPLEX: 10MG/ML IN 10 MM HEPES PH 7.0; 100 MM NACL EUQAL RESERVOIR AND PROTEIN VOLUMES MIXED

Crystal Properties
Matthews coefficient	Solvent content
2.69	59.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.497	α = 90
b = 52.009	β = 129.03
c = 69.013	γ = 90

Symmetry
Space Group	C 1 2 1

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	ADSC CCD		2010-09-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A		NSLS	X29A

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	2.05	50	98.1	0.04	31.7	7.2		15965		2

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	2.05	2.12	89.2		0.45	1.9	5.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	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)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1E3O	2.049	41.389	1.34	15949	1599	97.63	0.1978	0.194	0.191	0.2317	0.2287	72.2

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]
-0.7021		8.0745	5.6341		-4.9321

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	21.582
f_angle_d	1.153
f_chiral_restr	0.057
f_bond_d	0.007
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1025
Nucleic Acid Atoms	431
Solvent Atoms	38
Heterogen Atoms	16

Software

Software
Software Name	Purpose
PHENIX	refinement
PHASER	phasing