1GN4

H145E mutant of Mycobacterium tuberculosis iron-superoxide dismutase.

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1IDS

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7	277	100MM TRIS-HCL PH 7.0, 25% PEG 6000,PROTEIN CONCENTRATION = 3 MG/ML, 4 DEGREES CENTIGRADE.

Crystal Properties
Matthews coefficient	Solvent content
2.22	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.66	α = 90
b = 102.86	β = 90
c = 73.94	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	MARRESEARCH			M	SINGLE WAVELENGTH

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)	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	2.5	99	94.4	0.107		7.6		207000

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-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1IDS	2.5	20	27288		94.4	0.172	0.225	RANDOM

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
p_angle_d	0.025
p_bond_d	0.012
p_chiral_restr	0.012
p_plane_restr	0.01
p_angle_deg
p_planar_d
p_hb_or_metal_coord
p_mcbond_it
p_mcangle_it
p_scbond_it
p_scangle_it
p_singtor_nbd
p_multtor_nbd
p_xhyhbond_nbd
p_xyhbond_nbd
p_planar_tor
p_staggered_tor
p_orthonormal_tor
p_transverse_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6268
Nucleic Acid Atoms
Solvent Atoms	288
Heterogen Atoms	4

Software

Software
Software Name	Purpose
CCP4	refinement
MOSFLM	data reduction
SCALA	data scaling
CCP4	phasing