3M81

Crystal structure of Acetyl xylan esterase (TM0077) from THERMOTOGA MARITIMA at 2.50 A resolution (native apo structure)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.3	277	0.2000M CaAcetate, 20.0000% PEG-3350, No Buffer pH 7.3, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.56	51.91

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.46	α = 90
b = 103.79	β = 90
c = 221.02	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	ADSC QUANTUM 315		2009-06-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.3		ALS	5.0.3

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.5	48.795	100	0.207	14.37			83045		-3	44.247

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.56	100		0.011	2.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	MR	THROUGHOUT	1vlq	2.5	48.795	83045	4200	99.99	0.169	0.167	0.212	RANDOM	29.065

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]
-0.68			0.24		0.44

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	31.496
r_dihedral_angle_4_deg	17.772
r_dihedral_angle_3_deg	14.952
r_scangle_it	5.97
r_dihedral_angle_1_deg	5.954
r_scbond_it	4.698
r_mcangle_it	2.577
r_mcbond_it	1.748
r_angle_refined_deg	1.469
r_angle_other_deg	0.972
r_symmetry_vdw_other	0.322
r_symmetry_vdw_refined	0.285
r_nbd_refined	0.218
r_mcbond_other	0.217
r_nbd_other	0.197
r_nbtor_refined	0.193
r_xyhbond_nbd_refined	0.148
r_metal_ion_refined	0.124
r_symmetry_hbond_refined	0.101
r_chiral_restr	0.088
r_nbtor_other	0.088
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	15568
Nucleic Acid Atoms
Solvent Atoms	507
Heterogen Atoms	54

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
PHASER	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction