4QEH

Room temperature X-ray structure of D-xylose isomerase in complex with two Mg2+ ions and L-ribose

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	batch	7.7	291	30% ammonium sulfate, 0.1M HEPES pH 7.7, batch, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.78	55.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.922	α = 90
b = 99.561	β = 90
c = 103.051	γ = 90

Symmetry
Space Group	I 2 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	291	IMAGE PLATE	RIGAKU RAXIS IV++		2013-03-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE		1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.55	40	85			69155	58816	4	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	AB INITIO	FREE R	NONE	1.55	20	66366	3327	94.8	0.1595	0.1581		0.1839	RANDOM

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]

Coordinate Error
Structure Solution Method	Refinement High Resolution	Refinement Low Resolution
5		3316.5

RMS Deviations
Key	Refinement Restraint Deviation
s_non_zero_chiral_vol	0.082
s_similar_adp_cmpnt	0.069
s_zero_chiral_vol	0.057
s_angle_d	0.028
s_from_restr_planes	0.0228
s_anti_bump_dis_restr	0.022
s_bond_d	0.011
s_similar_dist
s_rigid_bond_adp_cmpnt
s_approx_iso_adps

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3053
Nucleic Acid Atoms
Solvent Atoms	255
Heterogen Atoms	12

Software

Software
Software Name	Purpose
HKL-3000	data collection
PHASER	phasing
SHELXL-97	refinement
HKL-3000	data reduction
HKL-3000	data scaling
SHELX	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.