6B8F | pdb_00006b8f

Contracted Human Heavy-Chain Ferritin Crystal-Hydrogel Hybrid

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	Reservoir: 500 uL of 25 mM HEPES pH 7.0 with 10 mM CaCl2 Well: 2 uL of reservoir solution and 2 uL of 2.5 uM ferritin (by 24-mer) in 15 mM TRIS pH 7.4 with 150 mM NaCl After crystals formed, a crystal was harvested and soaked in a buffered solution comprised of 25 mM HEPES pH 7.0, 30 mM CaCl2, 8.6 % (w/v) sodium acrylate, 2.5 % (w/v) acrylamide, and 0.2 % (w/v) Bis-acrylamide overnight. Crystal was transferred to a solution containing 1 % APS and 1% TEMED with 4 M NaCl for 5 min. Crystal was then transferred to a clean slide and soaked in 30 uL H2O for 5 min. This solution was removed and the crystal was soaked in 1 M CaCl2 for 2 min. The crystal was removed, cryoprotected in perfluoro polyether, and frozen in liquid N2.

Crystal Properties
Matthews coefficient	Solvent content
3.03	59.38

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 180.04	α = 90
b = 180.04	β = 90
c = 180.04	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 PILATUS 6M		2017-04-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.97946	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	1.06	63.65	99	0.06	0.999	24.8	14		111189

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.06	1.08	86.4		0.222	0.897	3.2	2.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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)	Mean Isotropic B
X-RAY DIFFRACTION		1.06	45.01	1.34	111175	5495	98.93	0.0916	0.091	0.0933	0.1026	0.1041

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
f_dihedral_angle_d	18.762
f_angle_d	1.317
f_chiral_restr	0.095
f_bond_d	0.013
f_plane_restr	0.011

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1406
Nucleic Acid Atoms
Solvent Atoms	340
Heterogen Atoms	13

Software

Software
Software Name	Purpose
PHENIX	refinement
iMOSFLM	data reduction
Aimless	data scaling
PHASER	phasing