4QFF

Structure of a 16 nm protein cage designed by fusing symmetric oligomeric domains, quadruple mutant, P212121 form

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.8	298	0.1 M sodium/potassium phosphate, pH 5.8, 10% PEG8000, 0.2 M sodium chloride, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.28	62.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 155.5	α = 90
b = 156.52	β = 90
c = 325.03	γ = 90

Symmetry
Space Group	P 21 21 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 HTC		2014-01-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.542

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	7.81	91.273	92.1	0.142	10.67			8723		-3	127.481

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	7.81	8.01	77.4		0.597	2.35

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	7.811	91.27	8723	437	92.13	0.2901	0.2876	0.3388	RANDOM	241.153

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]
-13.46			-9.11		22.57

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.023
r_dihedral_angle_4_deg	20.39
r_dihedral_angle_3_deg	15.718
r_mcangle_it	10.827
r_mcbond_it	5.873
r_mcbond_other	5.873
r_dihedral_angle_1_deg	4.143
r_angle_refined_deg	1.437
r_angle_other_deg	1.421
r_chiral_restr	0.076

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.023
r_dihedral_angle_4_deg	20.39
r_dihedral_angle_3_deg	15.718
r_mcangle_it	10.827
r_mcbond_it	5.873
r_mcbond_other	5.873
r_dihedral_angle_1_deg	4.143
r_angle_refined_deg	1.437
r_angle_other_deg	1.421
r_chiral_restr	0.076
r_bond_refined_d	0.01
r_bond_other_d	0.006
r_gen_planes_refined	0.005
r_gen_planes_other	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	40512
Nucleic Acid Atoms
Solvent Atoms
Heterogen Atoms

Software

Software
Software Name	Purpose
XSCALE	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.