2B4F

Structure Of A Cold-Adapted Family 8 Xylanase in complex with substrate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	277	PEG8000, sodium cacodylate, ammonium acetate, pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.711	α = 90
b = 91.099	β = 90
c = 99.633	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		2005-05-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7A	0.94	EMBL/DESY, HAMBURG	BW7A

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	1.95	20	100			34436	34436

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	1.95	2.01	100

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	PDB Entry: 1H13	1.95	20	32633	32633	1702	99.99	0.14811	0.14811	0.14647	0.1785	RANDOM	16.606

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]
-0.63			0.05		0.58

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.826
r_scangle_it	2.587
r_scbond_it	1.674
r_angle_refined_deg	1.287
r_mcangle_it	1.093
r_angle_other_deg	0.821
r_mcbond_it	0.594
r_symmetry_vdw_other	0.337
r_nbd_other	0.246
r_nbd_refined	0.215
r_symmetry_hbond_refined	0.167
r_xyhbond_nbd_refined	0.139
r_symmetry_vdw_refined	0.124
r_nbtor_other	0.084
r_chiral_restr	0.083
r_bond_refined_d	0.011
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	3206
Nucleic Acid Atoms
Solvent Atoms	448
Heterogen Atoms	92

Software

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