1AR5

X-RAY STRUCTURE OF THE CAMBIALISTIC SUPEROXIDE DISMUTASE FROM PROPIONIBACTERIUM SHERMANII ACTIVE WITH FE OR MN

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	microseeding	6.15	277	PROTEIN WAS CRYSTALLIZED FROM 2.15 M (NH4)2SO4, 50 MM KPI, PH 6.15 AT 4 DEG C. NUCLEATION WAS INDUCED BY ADDING A MICROSEED FROM CRYSTALS GROWN FROM 2.4 M (NH4)2SO4, 50MM KPI, PH 7.4 AT 4 DEG C., microseeding, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.04	32.2

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.83	α = 90
b = 85.687	β = 90
c = 108.59	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	295	AREA DETECTOR	SIEMENS		1995-11-26	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	ENRAF-NONIUS FR591

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	1.6	39.8	96.5	0.027	0.027	22.7	3.9		47484		2	15.01

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)
	1.6	1.66	90.2		0.136	0.136	7	2.3

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MR/MIR	THROUGHOUT	FE-SOD E.COLI, MN-SOD T.THERMOPHILUS	1.6	10	4.5	44130	4451	89.79	0.163	0.163	0.184	RANDOM	16.83

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
x_dihedral_angle_d	21
x_scangle_it	2.5
x_mcangle_it	2
x_scbond_it	2
x_mcbond_it	1.5
x_angle_deg	1.291
x_improper_angle_d	0.913
x_bond_d	0.005
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3210
Nucleic Acid Atoms
Solvent Atoms	451
Heterogen Atoms	2

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
SAINT	data reduction
Agrovata	data scaling
TRUNCATE	data scaling
X-PLOR	phasing