2V2K

THE CRYSTAL STRUCTURE OF FDXA, A 7FE FERREDOXIN FROM MYCOBACTERIUM SMEGMATIS

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1H98	PDB ENTRY 1H98

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.5		AMMONIUM SULPHATE, MPD, SODIUM ACETATE, pH 5.50

Crystal Properties
Matthews coefficient	Solvent content
2.28	46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 54.581	α = 90
b = 54.526	β = 90
c = 135.382	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	110	CCD	ADSC CCD		2007-04-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1

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	1.6	20	93.9	0.07	12.9	3.5		26692		2

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	1.6	1.69	99.9		0.34	2.7	3.5

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 1H98	1.6	67.73	25306	1344	98.4	0.167	0.165	0.202	RANDOM	18.54

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]
-0.67			2.49		-1.82

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.876
r_dihedral_angle_3_deg	13.512
r_dihedral_angle_4_deg	7.664
r_dihedral_angle_1_deg	6.064
r_scangle_it	3.164
r_scbond_it	2.223
r_angle_refined_deg	1.528
r_angle_other_deg	1.223
r_mcbond_it	1.13
r_mcangle_it	1.128
r_chiral_restr	0.707
r_nbd_refined	0.298
r_symmetry_vdw_other	0.192
r_nbd_other	0.184
r_xyhbond_nbd_refined	0.178
r_symmetry_hbond_refined	0.174
r_nbtor_refined	0.167
r_symmetry_vdw_refined	0.124
r_nbtor_other	0.086
r_bond_other_d	0.018
r_bond_refined_d	0.016
r_gen_planes_refined	0.006
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1569
Nucleic Acid Atoms
Solvent Atoms	118
Heterogen Atoms	32

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
MOSFLM	data scaling
MOLREP	phasing