1T6E

Crystal Structure of the Triticum aestivum xylanase inhibitor I

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	293	0.15 M ammonium sulphate, 0.1 M sodium acetate buffer, 23 % PEG4000, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.44	49.27

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.259	α = 90
b = 66.722	β = 90
c = 106.063	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	100	CCD	MARRESEARCH	bent mirror	2002-05-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.811	EMBL/DESY, Hamburg	X11

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	1.7	30				40019	35394	1.41	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.7	1.73	99.5

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	1.7	30	36023	36023	3939	99.41	0.18535	0.18221	0.21391	RANDOM	21.662

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]
1.8			-0.82		-0.98

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.612
r_scangle_it	3.648
r_scbond_it	2.212
r_mcangle_it	1.496
r_angle_refined_deg	1.46
r_angle_other_deg	0.819
r_mcbond_it	0.819
r_symmetry_vdw_other	0.253
r_nbd_other	0.251
r_nbd_refined	0.199
r_xyhbond_nbd_refined	0.161
r_symmetry_hbond_refined	0.136
r_symmetry_vdw_refined	0.12
r_chiral_restr	0.088
r_nbtor_other	0.084
r_bond_refined_d	0.013
r_gen_planes_other	0.01
r_gen_planes_refined	0.008
r_bond_other_d	0.002
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2595
Nucleic Acid Atoms
Solvent Atoms	318
Heterogen Atoms	6

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHARP	phasing