1T6G

Crystal structure of the Triticum aestivum xylanase inhibitor-I in complex with aspergillus niger xylanase-I

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	0.25 M magnesium acetate 0.1 M sodium cacodylate buffer, 17% PEG8000, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.58	51.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.434	α = 90
b = 88.434	β = 90
c = 128.995	γ = 120

Symmetry
Space Group	P 32

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	ADSC QUANTUM 4		2002-11-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1	0.934	ESRF	ID14-1

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	1.8	29.74	89.1			104587	93187	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	1.8	1.9	99.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	1T6E, 1UKR	1.8	29.74	94039	94039	10511	99.97	0.16068	0.16161	0.15828	0.19171	RANDOM	14.576

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]
0.11	0.05		0.11		-0.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.89
r_scangle_it	2.891
r_scbond_it	1.827
r_angle_refined_deg	1.364
r_mcangle_it	1.177
r_angle_other_deg	0.78
r_mcbond_it	0.639
r_symmetry_vdw_refined	0.346
r_symmetry_hbond_refined	0.339
r_nbd_other	0.253
r_symmetry_vdw_other	0.227
r_nbd_refined	0.199
r_xyhbond_nbd_refined	0.14
r_nbtor_other	0.083
r_chiral_restr	0.082
r_bond_refined_d	0.01
r_gen_planes_refined	0.006
r_gen_planes_other	0.004
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8044
Nucleic Acid Atoms
Solvent Atoms	1074
Heterogen Atoms	24

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
AMoRE	phasing