3SG0

The crystal structure of an extracellular ligand-binding receptor from Rhodopseudomonas palustris HaA2

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	289	1.6M Sodium Citrate Tribasic, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.61	52.87

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 62.494	α = 90
b = 70.301	β = 90
c = 98.265	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	CCD	ADSC QUANTUM 315r	Mirror	2011-06-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97929	APS	19-ID

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	1.2	39	99.7	0.096	44.6	7	134515	134515

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	1.2	1.22	95.9		0.557	2.5	4.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	SAD	1.201	38.625	131748	131748	6639	97.42	0.1502	0.1496	0.1616

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]
0.436			0.0463		-0.4823

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.049
f_angle_d	1.11
f_chiral_restr	0.074
f_plane_restr	0.006
f_bond_d	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2695
Nucleic Acid Atoms
Solvent Atoms	527
Heterogen Atoms	11

Software

Software
Software Name	Purpose
SBC-Collect	data collection
SHELXD	phasing
MLPHARE	phasing
DM	model building
ARP	model building
WARP	model building
HKL-3000	phasing
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
DM	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.