4PW2

Crystal structure of D-glucuronyl C5 epimerase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.6	293	16% w/v PEG 3,350, 0.1 M sodium citrate tribasic dihydrate pH 5.6, and 2% v/v Tacsimate pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.81	56.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 66.379	α = 90
b = 66.379	β = 90
c = 337.571	γ = 90

Symmetry
Space Group	P 41 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	MARMOSAIC 300 mm CCD		2013-02-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-G	0.97856	APS	21-ID-G

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	1.9	50	100	0.101	14.8	14	61140	61140

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	1.9	2	99.9		1.04	3.2	14.7	8707

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.9	47.38	57978	57920	3094	99.9	0.21189	0.21189	0.21019	0.24424	RANDOM	36.239

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]
1.42			1.42		-2.84

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.785
r_dihedral_angle_4_deg	19.466
r_dihedral_angle_3_deg	13.945
r_long_range_B_refined	6.006
r_dihedral_angle_1_deg	5.588
r_mcangle_it	2.229
r_scbond_it	1.682
r_mcbond_it	1.335
r_angle_refined_deg	1.124
r_chiral_restr	0.077
r_bond_refined_d	0.006
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4086
Nucleic Acid Atoms
Solvent Atoms	684
Heterogen Atoms	13

Software

Software
Software Name	Purpose
HKL-2000	data collection
SHELXS	phasing
REFMAC	refinement
XDS	data reduction
SCALA	data scaling