4NZJ

Crystal structure of a putative alpha-galactosidase (BF1418) from Bacteroides fragilis NCTC 9343 at 1.57 A resolution

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	277	0.16M magnesium acetate, 20.0% Glycerol, 16.0% polyethylene glycol 8000, 0.1M sodium cacodylate pH 6.5, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.35	47.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.614	α = 90
b = 114.614	β = 90
c = 77.051	γ = 90

Symmetry
Space Group	P 42 21 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	CCD	ADSC QUANTUM 315	KOHZU: Double Crystal Si(111)	2013-10-17	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1	0.918401,0.979261,0.979152	ALS	8.2.1

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	1.57	29.386	99.1	0.076	9.28			71815		-3	22.74

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	1.57	1.63	94.7		0.947	1.5

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	MAD	THROUGHOUT	1.57	29.386	71742	3628	99.75	0.1549	0.1541	0.1685	RANDOM	27.1649

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]
-0.41			-0.41		0.82

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.487
r_dihedral_angle_4_deg	12.63
r_dihedral_angle_3_deg	11.527
r_dihedral_angle_1_deg	5.458
r_mcangle_it	2.015
r_mcbond_it	1.224
r_mcbond_other	1.223
r_angle_refined_deg	1.099
r_angle_other_deg	0.695
r_chiral_restr	0.065

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.487
r_dihedral_angle_4_deg	12.63
r_dihedral_angle_3_deg	11.527
r_dihedral_angle_1_deg	5.458
r_mcangle_it	2.015
r_mcbond_it	1.224
r_mcbond_other	1.223
r_angle_refined_deg	1.099
r_angle_other_deg	0.695
r_chiral_restr	0.065
r_bond_refined_d	0.005
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3656
Nucleic Acid Atoms
Solvent Atoms	480
Heterogen Atoms	6

Software

Software
Software Name	Purpose
MolProbity	model building
PDB_EXTRACT	data extraction
SHELX	phasing
SHARP	phasing
XSCALE	data scaling
REFMAC	refinement
XDS	data reduction
SHELXD	phasing

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.