2B45

Crystal structure of an engineered uninhibited Bacillus subtilis xylanase in free state

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	277	20 % (w/v) polyethylene glycol 8000, 0.1 M HEPES buffer, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.6

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 60.8	α = 90
b = 60.8	β = 90
c = 95.8	γ = 120

Symmetry
Space Group	P 61

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	2003-09-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.8120	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	2	40	90			11802	10488	1.41	0.7

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2	2.05	97

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2	40	11802	11802	1313	96.41	0.1615	0.1615	0.15783	0.19494	RANDOM	13.672

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]
-0.82	-0.41		-0.82		1.24

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	8.4
r_scangle_it	2.728
r_scbond_it	1.868
r_angle_refined_deg	1.424
r_mcangle_it	1.165
r_angle_other_deg	0.861
r_mcbond_it	0.642
r_symmetry_hbond_refined	0.292
r_nbd_other	0.261
r_symmetry_vdw_refined	0.261
r_symmetry_vdw_other	0.253
r_nbd_refined	0.188
r_xyhbond_nbd_refined	0.152
r_chiral_restr	0.084
r_nbtor_other	0.084
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_gen_planes_other	0.003
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1448
Nucleic Acid Atoms
Solvent Atoms	147
Heterogen Atoms	15

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALA	data scaling
CNS	refinement
MOSFLM	data reduction
CCP4	data scaling
CNS	phasing