1SQ3

Crystal structures of a novel open pore ferritin from the hyperthermophilic Archaeon Archaeoglobus fulgidus.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	MICROBATCH UNDER OIL	7.5	293	PEG 400, HEPES, MgCl2, FeSO4 , pH 7.5, MICROBATCH UNDER OIL, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.16	61.07

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 184.502	α = 90
b = 190.243	β = 90
c = 179.407	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU RAXIS IV	osmic mirror	2003-10-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE		1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.7	80	99.9	0.097	26.43		86172	86172

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.7	2.8	100		0.394	0.394	6.67		8527

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB entry 1S3Q	2.7	30	86172	81803	4330	99.81	0.17877	0.17877	0.17672	0.21755	RANDOM	19.829

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]
-1.09			0.43		0.66

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.167
r_scangle_it	3.321
r_mcangle_it	2.734
r_scbond_it	2.088
r_mcbond_it	1.666
r_angle_refined_deg	1.461
r_angle_other_deg	1.135
r_symmetry_hbond_refined	0.471
r_nbd_other	0.279
r_xyhbond_nbd_refined	0.278
r_nbd_refined	0.267
r_symmetry_vdw_other	0.265
r_symmetry_vdw_refined	0.222
r_metal_ion_refined	0.12
r_nbtor_other	0.088
r_chiral_restr	0.08
r_bond_refined_d	0.013
r_gen_planes_refined	0.013
r_gen_planes_other	0.009
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	16113
Nucleic Acid Atoms
Solvent Atoms	515
Heterogen Atoms	36

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling