7O66

Crystal structure of human mitochondrial ferritin (hMTF) Fe(II)-loaded for 60 minutes showing either a dioxygen or a superoxide anion coordinated to iron ions in the ferroxidase site

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		281.15	1.6-2 M MgCl2 6H2O and 0.1 M bicine pH 9.0

Crystal Properties
Matthews coefficient	Solvent content
3.18	61.32

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 183.83	α = 90
b = 183.83	β = 90
c = 183.83	γ = 90

Symmetry
Space Group	F 4 3 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	PIXEL	DECTRIS PILATUS3 6M		2018-02-19	M	MAD
2	1	x-ray	100	PIXEL	DECTRIS PILATUS3 6M		2018-02-19	M	MAD
3	1	x-ray	100	PIXEL	DECTRIS PILATUS3 6M		2018-02-19	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I03	0.97622	Diamond	I03
2	SYNCHROTRON	DIAMOND BEAMLINE I03	1.73937	Diamond	I03
3	SYNCHROTRON	DIAMOND BEAMLINE I03	1.74380	Diamond	I03

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	64.99	100	0.107	0.111	0.024	0.999	15.4	21.3		35601	2		20.5

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.6	1.69	99.9		0.839	0.876	0.188	0.904	3.7	21.4

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	1R03	1.6	64.99	33807	1772	99.9	0.1565	0.1553	0.1791	RANDOM	22.355

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.803
r_dihedral_angle_4_deg	12.942
r_dihedral_angle_3_deg	12.211
r_dihedral_angle_1_deg	5.351
r_angle_refined_deg	1.548
r_chiral_restr	0.091
r_gen_planes_refined	0.01
r_bond_refined_d	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1407
Nucleic Acid Atoms
Solvent Atoms	314
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
SCALA	data scaling
MOLREP	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.