3PXP

Crystal structure of a PAS and DNA binding domain containing protein (Caur_2278) from CHLOROFLEXUS AURANTIACUS J-10-FL at 2.30 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		9.1	277	0.2M sodium chloride, 10.5% polyethylene glycol 8000, 0.1M CHES pH 9.1, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.84

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 228.807	α = 90
b = 83.568	β = 103.12
c = 54.52	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	MAR MAR325	FLAT MIRROR (VERTICAL FOCUSING)	2007-02-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1		SSRL	BL11-1

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	2.3	29.748	98.1	0.059	2.42			44327		-3	36.21

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	2.3	2.38	98.6		0.318	2.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	SAD	2.3	29.75	44326	2235		0.169	0.168	0.206	38.4

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]
-1.1569		0.3835	2.0869		-0.9301

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	2.9
t_omega_torsion	2.79
t_angle_deg	0.93
t_bond_d	0.01
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it

RMS Deviations
Key	Refinement Restraint Deviation
t_other_torsion	2.9
t_omega_torsion	2.79
t_angle_deg	0.93
t_bond_d	0.01
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7093
Nucleic Acid Atoms
Solvent Atoms	608
Heterogen Atoms	93

Software

Software
Software Name	Purpose
SHELX	phasing
BUSTER-TNT	refinement
XSCALE	data processing
PDB_EXTRACT	data extraction
XDS	data reduction
XSCALE	data scaling
SHELXD	phasing
autoSHARP	phasing
BUSTER	refinement

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 R01GM133198.