Experiment: 3FD9

Crystal Structure of the transcriptional anti-activator ExsD from Pseudomonas aeruginosa

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.8	277	0.1 M Bis-Tris (pH 6.8), 0.2 M Ammonium Acetate, and 30% polyethylene glycol 3350 was combined at a 1:1 ratio with 20ExsD solution at 15 mg/ml in 25 mM Tris-HCl (pH 7.4), 0.15 M NaCl, 2 mM TCEP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.49	50.66

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 144.755	α = 90
b = 69.347	β = 90
c = 86.331	γ = 90

Symmetry
Space Group	P 21 21 2

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 315		2008-04-16	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)	R Sym 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	2.6	29.401	92.5	0.11	0.11		8		23616		-3	49.3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.6	2.69	57.4		0.39	0.39	1.7	4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	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	SAD	2.6	29.4	1	23613	23613	1213	86.4	0.215	0.213	0.2064	0.263	0.2511	50.17

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]
-6.4078			-10.5746		9.0783

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	17.249
f_angle_d	0.832
f_chiral_restr	0.058
f_bond_d	0.005
f_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5754
Nucleic Acid Atoms
Solvent Atoms	119
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
RESOLVE	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
PHENIX	phasing