6K0G

Crystal Structure of UDP-glucose 4-epimerase from Bifidobacterium longum in complex with NAD+ and UDP

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1EK6

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277.15	30% (v/v) PEG 400, 0.2 M MgCl, 0.1 M HEPES-NaOH (pH 7.5), 10 mM UDP

Crystal Properties
Matthews coefficient	Solvent content
3.06	59.83

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.235	α = 90
b = 70.235	β = 90
c = 320.578	γ = 120

Symmetry
Space Group	P 65 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	CCD	ADSC QUANTUM 270		2013-05-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE BL-17A	0.979	Photon Factory	BL-17A

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	1.8	50	100	0.122	31.8	18.1		44804

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	1.8	1.83	100		0.573	6.7	20.6

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	1EK6	1.8	40.17	42417	2250	99.82	0.1505	0.1489	0.1795	RANDOM	21.326

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]
					0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.646
r_dihedral_angle_4_deg	12.965
r_dihedral_angle_3_deg	11.558
r_dihedral_angle_1_deg	6.781
r_angle_refined_deg	1.725
r_angle_other_deg	1.089
r_chiral_restr	0.094
r_bond_refined_d	0.014
r_gen_planes_refined	0.011
r_bond_other_d	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.646
r_dihedral_angle_4_deg	12.965
r_dihedral_angle_3_deg	11.558
r_dihedral_angle_1_deg	6.781
r_angle_refined_deg	1.725
r_angle_other_deg	1.089
r_chiral_restr	0.094
r_bond_refined_d	0.014
r_gen_planes_refined	0.011
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2588
Nucleic Acid Atoms
Solvent Atoms	375
Heterogen Atoms	70

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
HKL-2000	data scaling
MOLREP	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 R01GM157729.