7QEK

Structure of the ligand binding domain of the antibiotic biosynthesis regulator AdmX from the rhizobacterium Serratia plymuthica A153 bound to the auxin indole-3-piruvic acid (IPA).

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7QEJ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	COUNTER-DIFFUSION	8	293	Tris-HCl 0.1M pH 8.0, PEG 8000 30%

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.213	α = 90
b = 76.036	β = 90
c = 94.134	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	PIXEL	DECTRIS EIGER X 4M		2018-06-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE MASSIF-3	0.9677	ESRF	MASSIF-3

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	2.25	94.13	98.8	0.058	0.066	0.031	0.999	14.5	4.5		18502			49.44

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.25	2.32	99.5		0.973	1.1	0.504	0.603		4.7

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	THROUGHOUT	7QEJ	2.25	35.26	1.35	18452	899	98.47	0.2099	0.2074	0.2577	60.7248

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3188
Nucleic Acid Atoms
Solvent Atoms	30
Heterogen Atoms	31

Software

Software
Software Name	Purpose
XDS	data reduction
Aimless	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
MOLREP	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.