8UR1

Crystal structure N-acetylneuraminate lyase (NanA) from Klebsiella aerogenes (pyruvate bound halide free active site)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	291	Morpheus C11: 20%(v/v) Glycerol, 10% w/v PEG 4000, 100 mM Tris/BICINE, pH 8.5, 30 mM NaNO3, 30 mM Na2HPO4 and 30 mM (NH4)2SO4 KlaeA.01563.a.B1.PW39186 at 18.6 mg/mL. 2mM pyruvate added to the protein prior to crystallization. Cryo: direct. This structure has no halides near KPI 165 in the active which resulted in movement of a nearby loop is the previous structures.

Crystal Properties
Matthews coefficient	Solvent content
4.09	69.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 96.4	α = 90
b = 96.4	β = 90
c = 205.596	γ = 120

Symmetry
Space Group	P 62 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	100	PIXEL	Bruker PHOTON III		2023-09-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	BRUKER D8 QUEST	1.5418

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	2.1	46.93	100	0.229	0.232	0.036	0.999	17.9	42.6		33838

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	2.1	2.16		100	1.93	1.963	0.354	0.789		30.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	2.1	46.93	1.34	33767	1649	99.97	0.1843	0.1827	0.2142

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	15.254
f_angle_d	0.894
f_chiral_restr	0.047
f_bond_d	0.009
f_plane_restr	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2283
Nucleic Acid Atoms
Solvent Atoms	173
Heterogen Atoms	67

Software

Software
Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
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.