3O14

Crystal structure of an anti-ECFsigma factor, ChrR (Maqu_0586) from MARINOBACTER AQUAEOLEI VT8 at 1.70 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	10.9	277	0.2000M lithium sulfate, 2.5000M ammonium sulfate, 0.1M CAPS pH 10.9, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.27	45.74

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 44.105	α = 75.96
b = 45.773	β = 71.08
c = 65.892	γ = 63.35

Symmetry
Space Group	P 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	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2010-05-13	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91837,0.97936	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	1.7	29.402	97.3	0.074	7.4	2	46352	46352			11.168

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.7	1.74	95.8		0.317	0.317	2.4	2	3394

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	MAD	THROUGHOUT	1.7	29.402	46346	2349	97.36	0.154	0.1522	0.1872	RANDOM	15.2051

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]
0.62	-0.53	-0.26	0.27	0.13	-0.31

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.701
r_dihedral_angle_4_deg	17.502
r_dihedral_angle_3_deg	11.436
r_dihedral_angle_1_deg	6.998
r_scangle_it	3.737
r_scbond_it	2.336
r_angle_refined_deg	1.519
r_mcangle_it	1.357
r_angle_other_deg	0.908
r_mcbond_it	0.777

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.701
r_dihedral_angle_4_deg	17.502
r_dihedral_angle_3_deg	11.436
r_dihedral_angle_1_deg	6.998
r_scangle_it	3.737
r_scbond_it	2.336
r_angle_refined_deg	1.519
r_mcangle_it	1.357
r_angle_other_deg	0.908
r_mcbond_it	0.777
r_mcbond_other	0.228
r_chiral_restr	0.1
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3383
Nucleic Acid Atoms
Solvent Atoms	556
Heterogen Atoms	100

Software

Software
Software Name	Purpose
SHELX	phasing
REFMAC	refinement
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
SHELXD	phasing
autoSHARP	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.