3HEB

Crystal Structure of Response regulator receiver domain from Rhodospirillum rubrum

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	298	0.2 M NaCl, 0.1 M Bis Tris pH 6.5, 25% Peg 3350, 3.0 M NDSB-195, 20 % Glycerol , VAPOR DIFFUSION, SITTING DROP, temperature 298 K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.121	α = 90
b = 75.071	β = 96.41
c = 48.571	γ = 90

Symmetry
Space Group	P 1 21 1

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	Mirrors	2009-04-28	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	0.9797	NSLS	X29A

Data Collection

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	2.38	2.47	84.6		0.32	8.7	6.2	969

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.4	35.21	11105	10607	553	94.1	0.203	0.203	0.203	0.255	RANDOM	20.3

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]
-1.03		-2.47	-6.18		7.21

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	23.1
c_scangle_it	3.15
c_scbond_it	2.15
c_mcangle_it	1.96
c_angle_deg	1.3
c_mcbond_it	1.25
c_improper_angle_d	0.76
c_bond_d	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2226
Nucleic Acid Atoms
Solvent Atoms	122
Heterogen Atoms	10

Software

Software
Software Name	Purpose
CBASS	data collection
SHARP	phasing
SHELX	model building
ARP/wARP	model building
CNS	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
SHELX	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.