4L4Y

Crystal structures of the LsrR proteins complexed with phospho-AI-2 and its two different analogs reveal distinct mechanisms for ligand recognition

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	6.5	293	5% PEG3350, 0.1 M Bis-Tris, 0.1 M NaCl, pH 6.5, VAPOR DIFFUSION, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.8	56.13

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 115.812	α = 90
b = 115.812	β = 90
c = 80.891	γ = 120

Symmetry
Space Group	P 65

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 315r		2010-12-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-1A	0.97890	Photon Factory	BL-1A

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.9	27.27	96.4			46931	44511	1	1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	1.95	90.1

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	MOLECULAR REPLACEMENT	THROUGHOUT	1.9	27.27	44511	2369	96.33	0.1793	0.17705	0.22185	RANDOM	31.799

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]
0.34	0.34		0.34		-1.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.165
r_dihedral_angle_4_deg	22.178
r_dihedral_angle_3_deg	15.443
r_dihedral_angle_1_deg	5.712
r_angle_refined_deg	1.926
r_angle_other_deg	0.9
r_chiral_restr	0.114
r_bond_refined_d	0.019
r_gen_planes_refined	0.008
r_bond_other_d	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.165
r_dihedral_angle_4_deg	22.178
r_dihedral_angle_3_deg	15.443
r_dihedral_angle_1_deg	5.712
r_angle_refined_deg	1.926
r_angle_other_deg	0.9
r_chiral_restr	0.114
r_bond_refined_d	0.019
r_gen_planes_refined	0.008
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3480
Nucleic Acid Atoms
Solvent Atoms	268
Heterogen Atoms

Software

Software
Software Name	Purpose
ADSC	data collection
PHASES	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling

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.