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	R-Free	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	0.2317	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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.