5LEK

The Transcriptional Regulator PrfA-G145S mutant from Listeria Monocytogenes in complex with a 30-bp operator PrfA-box motif

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	291	Protein and duplex DNA were incubated together at a ratio of 1:1.3 (PrfA dimer:hly DNA) at final concentrations of 50 microM and 70 microM respectively in 20 mM Tris-HCl pH 8.0, 150 mM NaCl, 1 mM DTT for 60 min at room temperature, before being used for crystal setups. Crystals were obtained after 24 h by mixing 4 microL protein-DNA solution with 2 microL reservoir solution consisting of 8% PEG 8000, 100 mM sodium acetate pH 4.6, 100 mM magnesium acetate, 20% glycerol. Prior to vitrification the soaking of PrfAG145S-DNA crystals were soaked in a reservoir solution containing 30% glycerol for 24 h

Crystal Properties
Matthews coefficient	Solvent content
2.84	56.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.081	α = 90
b = 79.081	β = 90
c = 265.978	γ = 90

Symmetry
Space Group	P 43 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	PIXEL	DECTRIS PILATUS 6M-F		2016-01-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	BESSY BEAMLINE 14.1	0.8729	BESSY	14.1

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	2.8	47.3	99.4	0.091	14	7		21616

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	2.8	2.95	99.2		1.281	1.7	6.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation 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	FREE R-VALUE	2bgc	2.8	47.297	1.34	21616	1088	99.21	0.233	0.2313	0.2666

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	17.032
f_angle_d	0.761
f_chiral_restr	0.05
f_bond_d	0.004
f_plane_restr	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3844
Nucleic Acid Atoms	1224
Solvent Atoms	3
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.