3QI7

Crystal structure of a Putative transcriptional regulator (YP_001089212.1) from Clostridium difficile 630 at 1.86 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.96	277	30.00% polyethylene glycol 4000, 0.20M ammonium acetate, 0.1M sodium acetate pH 4.96, Additive: 0.001 M spermine, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.37	48.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.886	α = 90
b = 102.479	β = 90
c = 154.102	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	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2009-11-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2		SSRL	BL9-2

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	1.86	48.622	99.8	0.099	10.73			68584		-3	25.708

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	1.86	1.93	100		1.041	1.65

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	SAD	THROUGHOUT	1.86	48.622	68515	3468	99.83	0.1913	0.1897	0.2202	RANDOM	31.6134

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]
1.34			-0.22		-1.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.585
r_dihedral_angle_4_deg	14.737
r_dihedral_angle_3_deg	13.592
r_scangle_it	6.157
r_dihedral_angle_1_deg	5.451
r_scbond_it	4.252
r_mcangle_it	2.493
r_mcbond_it	1.552
r_angle_refined_deg	1.307
r_angle_other_deg	0.894

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.585
r_dihedral_angle_4_deg	14.737
r_dihedral_angle_3_deg	13.592
r_scangle_it	6.157
r_dihedral_angle_1_deg	5.451
r_scbond_it	4.252
r_mcangle_it	2.493
r_mcbond_it	1.552
r_angle_refined_deg	1.307
r_angle_other_deg	0.894
r_mcbond_other	0.633
r_chiral_restr	0.081
r_bond_refined_d	0.014
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5584
Nucleic Acid Atoms
Solvent Atoms	560
Heterogen Atoms

Software

Software
Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SHELX	phasing
SHARP	phasing
BP3	phasing
XSCALE	data scaling
REFMAC	refinement
XDS	data reduction
SHELXD	phasing
autoSHARP	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.