5BO9

Structure of human sialyltransferase ST8SiaIII in complex with CMP-3FNeu5Ac and Sia-6S-LacNAc

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	293	18-21% PEG3350, 30 mM sodium tartrate, 100 mM sodium citrate

Crystal Properties
Matthews coefficient	Solvent content
2.51	50.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.35	α = 90
b = 94.874	β = 90
c = 126.459	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	CCD	ADSC QUANTUM 315r		2015-02-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	1.0	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	2.3	75.89	100	0.087	0.044	0.998	12.3	4.8		34645

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.38	100		0.686	0.347	0.674	2.2	4.9	3345

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	5BO8	2.3	75.89	32842	1743	99.92	0.1871	0.1847	0.2304	RANDOM	43.944

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]
1.1			-1.28		0.18

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.967
r_dihedral_angle_4_deg	18.944
r_dihedral_angle_3_deg	15.197
r_dihedral_angle_1_deg	6.006
r_mcangle_it	3.034
r_mcbond_it	1.984
r_mcbond_other	1.982
r_angle_refined_deg	1.872
r_angle_other_deg	1.107
r_chiral_restr	0.096

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.967
r_dihedral_angle_4_deg	18.944
r_dihedral_angle_3_deg	15.197
r_dihedral_angle_1_deg	6.006
r_mcangle_it	3.034
r_mcbond_it	1.984
r_mcbond_other	1.982
r_angle_refined_deg	1.872
r_angle_other_deg	1.107
r_chiral_restr	0.096
r_bond_refined_d	0.015
r_gen_planes_refined	0.009
r_bond_other_d	0.006
r_gen_planes_other	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4640
Nucleic Acid Atoms
Solvent Atoms	173
Heterogen Atoms	342

Software

Software
Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing

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.