Experiment: 2OBA

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1B66	PDB ENTRY 1B66

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	9	298	0.2M lithium sulphate, 0.1M Tris HCl, 30% PEG3000 frozen in 70%paratone/30% mineral oil, pH 9, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.082	α = 90
b = 87.521	β = 90
c = 124.67	γ = 90

Symmetry
Space Group	P 21 21 21

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 QUANTUM 210		2006-10-07	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-ID	1	APS	17-ID

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	2.32	42.22	98.4	0.04	14.1	3.3	35610	33806

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	2.32	2.4	94.8		0.251		3.2	3372

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1B66	2.33	42.22	35610	33806	1769	97.7	0.189	0.186	0.256	RANDOM	45.765

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]
4.14			-1.47		-2.66

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.834
r_dihedral_angle_4_deg	23.364
r_dihedral_angle_3_deg	17.421
r_dihedral_angle_1_deg	6.367
r_scangle_it	3.067
r_scbond_it	1.917
r_angle_refined_deg	1.488
r_mcangle_it	1.162
r_mcbond_it	0.723
r_nbtor_refined	0.304

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.834
r_dihedral_angle_4_deg	23.364
r_dihedral_angle_3_deg	17.421
r_dihedral_angle_1_deg	6.367
r_scangle_it	3.067
r_scbond_it	1.917
r_angle_refined_deg	1.488
r_mcangle_it	1.162
r_mcbond_it	0.723
r_nbtor_refined	0.304
r_nbd_refined	0.203
r_xyhbond_nbd_refined	0.185
r_symmetry_vdw_refined	0.166
r_symmetry_hbond_refined	0.153
r_chiral_restr	0.111
r_bond_refined_d	0.014
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5950
Nucleic Acid Atoms
Solvent Atoms	259
Heterogen Atoms	6

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
JDirector	data collection
HKL-2000	data reduction
MOLREP	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.