8T27

Crystal Structure of Porphyromonas gingivalis Sialidase (PG_0352) D219A mutant bound to 6'-Sialyllactose (only Neu5Ac visible)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	296	1.8 M ammonium citrate tribasic, pH 7.0

Crystal Properties
Matthews coefficient	Solvent content
2.47	50.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.717	α = 90
b = 56.791	β = 96.33
c = 80.137	γ = 90

Symmetry
Space Group	P 1 21 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	PIXEL	DECTRIS PILATUS 6M		2023-03-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-D	1.0333	APS	23-ID-D

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim 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	1.41	41.67	97.56	0.07685	0.09363	0.05282	0.997	11.96	3		103559			16.26

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.41	1.461	95.23		0.9888	1.198	0.6683	0.372	1.04	3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	8FEB	1.41	41.67	1.34	103477	5276	97.57	0.1574	0.1561	0.1801	22.59

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	7.8057
f_angle_d	1.4632
f_chiral_restr	0.1284
f_bond_d	0.0147
f_plane_restr	0.0139

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3882
Nucleic Acid Atoms
Solvent Atoms	468
Heterogen Atoms	95

Software

Software
Software Name	Purpose
PHENIX	refinement
Coot	model building
PHASER	phasing
xia2	data scaling
DIALS	data reduction
xia2	data reduction
JBluIce-EPICS	data collection

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.