1GOR

THERMOSTABLE XYLANASE I FROM THERMOASCUS AURANTIACUS - XYLOBIOSE COMPLEX AT 100 K

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7		HANGING DROPS CONTAINING 1:1 RATIO OF 20-30 MG/ML PROTEIN SOLUTION AND RESERVOIR SOLUTION (12 % TO 25 % PEG 6,000). THE CRYSTAL WAS CRYOCOOLED WITH GLYCEROL AND 0.5 M XYLOBIOSE, pH 7.00

Crystal Properties
Matthews coefficient	Solvent content
2.02	32.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.645	α = 90
b = 59.252	β = 111.34
c = 50.641	γ = 90

Symmetry
Space Group	P 1 21 1

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	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ELETTRA BEAMLINE 5.2R		ELETTRA	5.2R

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	1.7	16	95	0.063		3.2		26202

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	1.7	1.76	75.1		0.343		2

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	FOURIER SYNTHESIS	THROUGHOUT	1GOK	1.7	16	24976	2454	90.1	0.174	0.174	0.2	RANDOM	19.5

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]
-1.885		-3.22	-0.606		2.491

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	21.96
c_scangle_it	1.719
c_angle_deg	1.39
c_scbond_it	1.195
c_mcangle_it	0.992
c_improper_angle_d	0.82
c_mcbond_it	0.666
c_bond_d	0.005
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2312
Nucleic Acid Atoms
Solvent Atoms	247
Heterogen Atoms	19

Software

Software
Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing