3ZK9

CRYSTAL STRUCTURE OF PNEUMOCOCCAL SURFACE ANTIGEN PSAA D280N IN THE METAL-FREE, OPEN STATE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1			293	12.5% W/V PEG 1,000 12.5% W/V PEG 3,350, 12.5% V/V MPD; 0.1 M TRIZMA/BICINE PH 8.7 AFTER 7-10 DAYS AT 293 K, FOLLOWING STREAK-SEEDING OF PRE-EQUILIBRATED (24 HOURS) DROPS.

Crystal Properties
Matthews coefficient	Solvent content
2.21	44.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.04	α = 106.92
b = 59.78	β = 103.91
c = 62.4	γ = 97.37

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC CCD	SILICON MIRRORS (ADAPTIVE AND U-BENT)		M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX2		Australian Synchrotron	MX2

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	1.45	19.46	95.5	0.03	21.1	3		91166		2	15.97

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	1.45	1.47	85.5		0.2	4.8	2.9

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	PDB ENTRY 1PSZ	1.45	19.46	91166	4567	95.55	0.1404	0.1391	0.1646	RANDOM	18.42

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]
-2.8217	-1.6323	-0.4795	1.4896	0.6782	1.3321

RMS Deviations
Key	Refinement Restraint Deviation
t_omega_torsion	4.9
t_other_torsion	2.71
t_angle_deg	1.07
t_bond_d	0.01
t_dihedral_angle_d
t_incorr_chiral_ct
t_pseud_angle
t_trig_c_planes
t_gen_planes
t_it
t_nbd
t_improper_torsion
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	4434
Nucleic Acid Atoms
Solvent Atoms	877
Heterogen Atoms	16

Software

Software
Software Name	Purpose
BUSTER	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing