8K2H

Crystal structure of Group 2Oligosaccharide/Monosaccharide-releasing beta-N-acetylhexosaminidase NgaAt from Arabidopsis thaliana in complex with GalNAc-thiazoline

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	AlphaFold

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293.15	0.2 M Magnesium chloride hexahydrate, 0.1 M Hepes-Na pH 7.5, 25% w/v Polyethylene glycol 3,350

Crystal Properties
Matthews coefficient	Solvent content
2.38	48.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 68.852	α = 90
b = 134.036	β = 90
c = 149.969	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	PIXEL	DECTRIS EIGER X 9M		2021-10-22	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SPRING-8 BEAMLINE BL32XU	1.0000	SPring-8	BL32XU

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	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	2.2	48.07	100	0.997	9.5	13.6		71289

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.2	2.25			0.648

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	MOLECULAR REPLACEMENT	THROUGHOUT	2.2	48.07	67508	3690	99.95	0.17206	0.16892	0.22947	RANDOM	43.8

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]
2.97			-2.87		-0.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	16.927
r_dihedral_angle_2_deg	16.81
r_long_range_B_other	10.286
r_long_range_B_refined	10.275
r_scangle_other	8.613
r_dihedral_angle_1_deg	7.964
r_mcangle_other	7.18
r_mcangle_it	7.179
r_scbond_it	6.551
r_scbond_other	6.55
r_mcbond_it	5.558
r_mcbond_other	5.558
r_angle_refined_deg	2.11
r_angle_other_deg	0.686
r_chiral_restr	0.095
r_bond_refined_d	0.014
r_gen_planes_refined	0.013
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_dihedral_angle_4_deg
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8941
Nucleic Acid Atoms
Solvent Atoms	279
Heterogen Atoms	43

Software

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