3E1L | pdb_00003e1l

Crystal structure of E. coli Bacterioferritin (BFR) soaked in phosphate with an alternative conformation of the unoccupied Ferroxidase centre (APO-BFR II).

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	1.8 M AMMOMIUM SULFATE, 0.1 M TRI- SODIUM CITRATE PH 5.0. SUBSEQUENTLY, THE CRYSTALS WERE SOAKED IN A CRYO-PROTECTANT BUFFER CONTAINING PHOSPHATE BUFFERED WITH MOPS PH 7 INSTEAD OF CITRATE. SEE PAPER FOR FULL DETAILS., VAPOR DIFFUSION, SITTING DROP, TEMPERATURE 298K, pH 5.00

Crystal Properties
Matthews coefficient	Solvent content
3.49	64.71

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 208.082	α = 90
b = 208.082	β = 90
c = 143.107	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	2.5	34.2	96.4	0.101	19.6	13.9		104275		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)
	2.5	2.64	80.7		0.251	5.2	5.7

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	2.5	34	99059	5157	96.2	0.236	0.236	0.23	0.248	0.24	EXTENDED FROM THE VALIDATION SET USED IN 2QP7.	11.67

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			-0.02		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.119
r_dihedral_angle_4_deg	24.406
r_dihedral_angle_3_deg	20.307
r_dihedral_angle_1_deg	4.248
r_scangle_it	3.493
r_scbond_it	2.237
r_angle_refined_deg	1.368
r_mcangle_it	1.122
r_mcbond_it	0.728
r_nbtor_refined	0.307
r_symmetry_vdw_refined	0.224
r_nbd_refined	0.213
r_symmetry_hbond_refined	0.17
r_xyhbond_nbd_refined	0.165
r_chiral_restr	0.123
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
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_refined
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	15876
Nucleic Acid Atoms
Solvent Atoms	496
Heterogen Atoms	337

Software

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