6ZA2

Crystal structure of dimeric latent PorU from Porphyromonas gingivalis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	293	The best crystals of full-length native and selenomethionine-derivatized PorU were obtained at 20 degrees in drops with 1 microL of protein solution (at 5-10 mg per mL in 20 mM Tris-HCl, 150 mM NaCl, pH 7.5) and 1 microL of reservoir solution (100 mM HEPES, 200 mM calcium chloride, 28-32 per cent v/v PEG600, pH 7.5). Crystals were cryoprotected by rapid passage through drops containing increasing amounts of glycerol (5-to-20 per cent v/v).

Crystal Properties
Matthews coefficient	Solvent content
3.65	66.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 171.7	α = 90
b = 171.7	β = 90
c = 440.4	γ = 120

Symmetry
Space Group	P 61 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	PIXEL	DECTRIS PILATUS3 6M		2017-07-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALBA BEAMLINE XALOC	0.9817	ALBA	XALOC

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim 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	3.35	88.48	100	0.152	0.154	1	22.71	38.5		56055			107

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	3.35	3.55	100		1.899	1.923	0.844	3.12	39.626

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	SAD	THROUGHOUT	3.35	88.48	56054	836	100	0.203	0.202	0.243	RANDOM	140.3

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]
-7.7643			-7.7643		15.5285

RMS Deviations
Key	Refinement Restraint Deviation
t_omega_torsion	3.65
t_other_torsion	3.29
t_angle_deg	1.15
t_bond_d	0.01
t_dihedral_angle_d
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
t_pseud_angle
t_chiral_improper_torsion
t_sum_occupancies
t_utility_distance
t_utility_angle
t_utility_torsion
t_ideal_dist_contact

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	16378
Nucleic Acid Atoms
Solvent Atoms	4
Heterogen Atoms	4

Software

Software
Software Name	Purpose
XSCALE	data scaling
BUSTER	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
SHELXDE	phasing