3E19

Crystal Structure of Iron Uptake Regulatory Protein (FeoA) Solved by Sulfur SAD in a Monoclinic Space Group

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	Other		ab initio

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	298	Sodium Phosphate, Potassium Phosphate, pH 7.5, vapor diffusion, sitting drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.63	53.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.786	α = 90
b = 68.386	β = 132.67
c = 68.969	γ = 90

Symmetry
Space Group	C 1 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	CCD	MARMOSAIC 300 mm CCD		2007-12-09		SINGLE WAVELENGTH
2	1	x-ray	298	CCD	MARMOSAIC 300 mm CCD		2007-12-09		SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 22-ID	1.9	APS	22-ID
2	SYNCHROTRON	APS BEAMLINE 22-ID	1.9	APS	22-ID

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	2	50	92.7	0.048		22.5		20216

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)
1,2	2	2.07	86.7		0.104		19.5

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	SAD	THROUGHOUT	ab initio	2	19.34	19064	1039	100	0.17576	0.17291	0.22789	RANDOM	19.723

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]
-0.02		-0.01	0.02		-0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.098
r_dihedral_angle_4_deg	24.201
r_dihedral_angle_3_deg	14.869
r_dihedral_angle_1_deg	14.335
r_scangle_it	5.145
r_scbond_it	3.198
r_mcangle_it	2.032
r_angle_refined_deg	1.864
r_mcbond_it	1.373
r_angle_other_deg	1.154
r_symmetry_vdw_refined	0.292
r_mcbond_other	0.287
r_symmetry_vdw_other	0.259
r_chiral_restr	0.24
r_nbd_refined	0.221
r_nbd_other	0.199
r_xyhbond_nbd_refined	0.198
r_nbtor_refined	0.163
r_xyhbond_nbd_other	0.149
r_nbtor_other	0.089
r_symmetry_hbond_refined	0.078
r_bond_refined_d	0.019
r_gen_planes_refined	0.006
r_bond_other_d	0.004
r_gen_planes_other	0.001
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2134
Nucleic Acid Atoms
Solvent Atoms	181
Heterogen Atoms	11

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling
PHENIX	phasing