3E1O

Crystal structure of E. coli Bacterioferritin (BFR) with two ZN(II) ION sites at the Ferroxidase centre (ZN-BFR).

X-RAY DIFFRACTION

---

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2QP7

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5	298	APO-BFR CRYSTALIZED IN 1.8 M AMMONIUM SULFATE, 0.1 M TRI-SODIUM CITRATE PH 5.0. CRYSTAL WAS THEN SOAKED IN A CRYOPROTECTANT CONTAINING ZN2+ IONS AND BUFFERED WITH MOPS PH 7 INSTEAD OF CITRATE. PLEASE SEE PAPER FO FULL DETAILS., VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K, pH 5.00

Crystal Properties
Matthews coefficient	Solvent content
3.46	64.47

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 207.867	α = 90
b = 207.867	β = 90
c = 142.432	γ = 90

Symmetry
Space Group	P 42 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD			2006-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX10.1		SRS	PX10.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.95	45	89.2	0.081	20.9	9.1		58778		1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.95	3.11	89.2		0.168	7.9	6.5

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	2QP7	2.95	44.81	55780	2964	89	0.23	0.229	0.252	COPIED AND EXTENDED FROM 2QP7.	7.37

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]
0.37			0.37		-0.73

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.961
r_dihedral_angle_4_deg	23.014
r_dihedral_angle_3_deg	22.371
r_dihedral_angle_1_deg	4.879
r_scangle_it	3.482
r_scbond_it	2.13
r_angle_refined_deg	1.941
r_mcangle_it	1.181
r_mcbond_it	0.704
r_nbtor_refined	0.323
r_symmetry_hbond_refined	0.264
r_symmetry_vdw_refined	0.249
r_nbd_refined	0.24
r_metal_ion_refined	0.18
r_chiral_restr	0.162
r_xyhbond_nbd_refined	0.157
r_bond_refined_d	0.022
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	15636
Nucleic Acid Atoms
Solvent Atoms	214
Heterogen Atoms	362

Software

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