Experiment: 7OU9

Crystal structure of dimeric chlorite dismutase variant Q74E (CCld Q74E) from Cyanothece sp. PCC7425 in complex with nitrite

X-RAY DIFFRACTION

Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	295	0.1 M MES pH 6.5, 0.15 M MgSO4, 23 %w/v PEG 3350, 2 %v/v Glycerol Soaking: 100 mM NaNO2

Crystal Properties
Matthews coefficient	Solvent content
3.01	59.19

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.697	α = 98.769
b = 52.684	β = 107.105
c = 54.99	γ = 109.95

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	PIXEL	DECTRIS PILATUS 6M		2021-02-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.9724	ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	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	2.42	45.97	96.3	0.966	3.9	1.7		18662			33.51

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.42	2.46			0.928

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	7ASB	2.42	45.97	1.97	18653	953	96.24	0.1843	0.1815	0.1826	0.2356	0.2351	40.96

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	10.1905
f_angle_d	0.534
f_chiral_restr	0.0411
f_plane_restr	0.0043
f_bond_d	0.0034

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2984
Nucleic Acid Atoms
Solvent Atoms	100
Heterogen Atoms	113

Software

Software
Software Name	Purpose
PHENIX	refinement
autoPROC	data reduction
autoPROC	data scaling
PHASER	phasing