1QNN

Cambialistic superoxide dismutase from Porphyromonas gingivalis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.8	293	SOLUTION CONTAINING 6-9MG/ML PROTEIN AND 10MM TRIS/HCL (PH7.8) WERE USED FOR CRYSTALLIZATION. CRYSTALS WERE GROWN FROM HANGING DROPS SUSPENDED OVER A RESERVOIR SOLUTION CONTAINING 100MM POTASSIUM PHOSPHATE (PH5.8) AND 26-31% PEG4000 AT 293K WITHIN A FEW WEEKS., pH 5.80

Crystal Properties
Matthews coefficient	Solvent content
2.3	46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.47	α = 90
b = 102.66	β = 90
c = 99.59	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	293	IMAGE PLATE	RIGAKU IMAGE PLATE	YALE MIRRORS	1996-08-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

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	1.79	99.4	88.2	0.057	11.6	5.64		64134			22.1

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	1.79	1.86	68.5		0.262	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1ISA	1.8	50	63443	1927	87.7	0.179	0.179	0.223	RANDOM	31.4

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	23.9
x_scangle_it	2.337
x_scbond_it	1.573
x_mcangle_it	1.572
x_angle_deg	1.22
x_mcbond_it	0.999
x_improper_angle_d	0.67
x_bond_d	0.006
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	6096
Nucleic Acid Atoms
Solvent Atoms	436
Heterogen Atoms	4

Software

Software
Software Name	Purpose
X-PLOR	refinement
PROCESS	data reduction
PROCESS	data scaling
X-PLOR	phasing