3E1P

Crystal structure of E. coli Bacterioferritin (BFR) in which the Ferroxidase centre is inhibited with ZN(II) and high occupancy iron is bound within the cavity.

X-RAY DIFFRACTION

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Starting Model(s)

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

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5	298	1.8 M AMMONIUM SULFATE, 0.1 M TRI- SODIUM CITRATE PH 5. APO-BFR CRYSTALS WERE SUBSEQUENTLY (AEROBICALLY) SOAKED IN A CRYOPROTECTANT SOLUTION CONTAINING FE2+ (AND BUFFERED AT PH 7.0 WITH 0.1 M MOPS IN PLACE OF CITRATE) FOR 65 MINUTES BEFORE FALSH FREEZING AND DATA COLLECTION. PLEASE SEE PAPER FOR FULL DETAILS., PH 5.0, VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K, pH 5.00

Crystal Properties
Matthews coefficient	Solvent content
3.45	64.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 207.397	α = 90
b = 207.397	β = 90
c = 142.451	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	2.4	73.32	97	0.116	16.3	12		117098

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)
	2.4	2.53	83.3		0.372	3.1	3.9

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2QP7 (APO-BFR)	2.4	71.25	111243	5788	96.8	0.241	0.24	0.24	0.26	0.26	EXTENDED FROM 2QP7	13.33

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]
-0.26			-0.26		0.53

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.474
r_dihedral_angle_4_deg	20.848
r_dihedral_angle_3_deg	18.09
r_dihedral_angle_1_deg	5.081
r_scangle_it	3.304
r_scbond_it	2.079
r_angle_refined_deg	1.433
r_mcangle_it	1.073
r_mcbond_it	0.767
r_nbtor_refined	0.296
r_symmetry_vdw_refined	0.244
r_nbd_refined	0.201
r_symmetry_hbond_refined	0.19
r_xyhbond_nbd_refined	0.186
r_chiral_restr	0.127
r_metal_ion_refined	0.05
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
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	15792
Nucleic Acid Atoms
Solvent Atoms	863
Heterogen Atoms	374

Software

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