6T9M

Crystal structure of the Chitinase Domain of the Spore Coat Protein CotE from Clostridium difficile

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	Well solution: 200 mM ammonium phosphate, 22.5% PEG 3350 Protein solution: 20 mM Tris-HCl, pH 8.0, 150 mM NaCl Drop: 3 microlitre (1 microlitre protein plus 2 microlitre reservoir solution)

Crystal Properties
Matthews coefficient	Solvent content
2.29	46.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.894	α = 90
b = 54.899	β = 101.038
c = 80.311	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS3 2M		2016-02-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	DIAMOND BEAMLINE I02	0.9795	Diamond	I02

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Rrim I (All)	CC (Half)	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	1.3	47.21	97.9	0.058	0.997	18	4.6		94650

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.3	1.32	96.1		0.31	0.954	6.5	4.7

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	xxx	1.3	45.09	94350	4557	97.89	0.107	0.1055	0.1333	14.194

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]
		-0.013	0.011		-0.005

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.349
r_dihedral_angle_4_deg	18.349
r_rigid_bond_restr	10.423
r_dihedral_angle_3_deg	10.205
r_dihedral_angle_1_deg	6.518
r_lrange_it	3.294
r_lrange_other	3.294
r_scangle_it	3.164
r_scangle_other	3.163
r_scbond_other	2.966
r_scbond_it	2.962
r_angle_refined_deg	2.471
r_angle_other_deg	2.467
r_mcangle_other	1.755
r_mcangle_it	1.74
r_mcbond_it	1.422
r_mcbond_other	1.381
r_symmetry_xyhbond_nbd_other	0.509
r_symmetry_nbd_refined	0.485
r_symmetry_xyhbond_nbd_refined	0.339
r_nbd_other	0.244
r_xyhbond_nbd_refined	0.242
r_nbd_refined	0.234
r_symmetry_nbd_other	0.218
r_nbtor_refined	0.187
r_chiral_restr	0.145
r_symmetry_nbtor_other	0.091
r_bond_other_d	0.035
r_gen_planes_other	0.024
r_bond_refined_d	0.02
r_gen_planes_refined	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2777
Nucleic Acid Atoms
Solvent Atoms	490
Heterogen Atoms	53

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
MOLREP	phasing