1UKR

STRUCTURE OF ENDO-1,4-BETA-XYLANASE C

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	vapor diffusion - sitting drop - macroseeding	4.7		SITTING DROP SETUP USING SILICONIZED GLASS WELLS USING 15 MICROLITER DROPS AT ROOM TEMPERATURE AND MACROSEEDING. PROTEIN SOLUTION: 4.5 MG/ML IN 10 MM NA ACETATE PH 4.7. RESERVOIR SOLUTION: 1.5 ML 1.8 M NA2S2O3 (PH 8.0)., vapor diffusion - sitting drop - macroseeding

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 84.3	α = 90
b = 85.3	β = 90
c = 113.8	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	295	IMAGE PLATE	MARRESEARCH		1994-10-20	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X31		EMBL/DESY, HAMBURG	X31

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym 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	2.35	38.06	95.3	0.082		4.6		33131

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	TRICHODERMA HARZIANUM XYLANASE, PDB ENTRY 1XND.	2.4	6	28728			0.179	0.179		19.2

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	27.7
x_angle_deg	2.295
x_improper_angle_d	0.882
x_bond_d	0.011
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5556
Nucleic Acid Atoms
Solvent Atoms	288
Heterogen Atoms

Software

Software
Software Name	Purpose
XDS	data scaling
BRUTE	model building
X-PLOR	refinement
XDS	data reduction
BRUTE	phasing