6Q0F

Crystal structure of ligand-binding domain of Pseudomonas fluorescens chemoreceptor CtaA in complex with L-valine

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		298	Ammonium sulfate and Tris-HCl

Crystal Properties
Matthews coefficient	Solvent content
2.24	45.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.21	α = 90
b = 71.83	β = 90
c = 112.28	γ = 90

Symmetry
Space Group	I 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	ADSC QUANTUM 210r		2018-02-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX1	1	Australian Synchrotron	MX1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	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	2.2	60.508	98.5	0.062	0.072	0.035	14.2	3.9		12446

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.32	99.7		0.353	0.353	0.407	0.199	2.1	3.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	3C8C	2.2	35.67	11822	623	97.75	0.2057	0.2016	0.2858	RANDOM	37.076

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]
3.53			-3.3		-0.23

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.417
r_dihedral_angle_4_deg	17.271
r_dihedral_angle_3_deg	16.238
r_dihedral_angle_1_deg	9.726
r_angle_refined_deg	1.51
r_angle_other_deg	1.331
r_chiral_restr	0.064
r_gen_planes_refined	0.013
r_bond_refined_d	0.005
r_gen_planes_other	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.417
r_dihedral_angle_4_deg	17.271
r_dihedral_angle_3_deg	16.238
r_dihedral_angle_1_deg	9.726
r_angle_refined_deg	1.51
r_angle_other_deg	1.331
r_chiral_restr	0.064
r_gen_planes_refined	0.013
r_bond_refined_d	0.005
r_gen_planes_other	0.002
r_bond_other_d

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1600
Nucleic Acid Atoms
Solvent Atoms	109
Heterogen Atoms	10

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
PDB_EXTRACT	data extraction
iMOSFLM	data reduction
PHASER	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 R01GM133198.