3G68

CRYSTAL STRUCTURE OF A PUTATIVE PHOSPHOSUGAR ISOMERASE (CD3275) FROM CLOSTRIDIUM DIFFICILE 630 AT 1.80 A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5	277	NANODROP, 0.20M (NH4)2H Citrate, 20.0% PEG 3350, No Buffer pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.12	42.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 130.525	α = 90
b = 55.914	β = 114.22
c = 103.031	γ = 90

Symmetry
Space Group	C 1 2 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	CCD	MARMOSAIC 325 mm CCD	Adjustable focusing mirrors in K-B geometry	2008-10-12	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.97967, 0.94645	APS	23-ID-B

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1.8	28.989	88.4	0.105	0.105	4.412	3.2		55259			13.458

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.8	1.85	43.3		0.247	0.247	3	1.6	1940

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	1.8	28.989	55259	2802	88.06	0.161	0.159	0.194	RANDOM	17.311

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]
-0.44		-1.01	-1.14		0.76

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.162
r_dihedral_angle_4_deg	13.32
r_dihedral_angle_3_deg	10.557
r_scangle_it	4.989
r_dihedral_angle_1_deg	3.845
r_scbond_it	3.735
r_mcangle_it	2.086
r_angle_refined_deg	1.567
r_mcbond_it	1.335
r_angle_other_deg	1.157
r_mcbond_other	0.269
r_nbd_refined	0.212
r_symmetry_vdw_other	0.192
r_symmetry_vdw_refined	0.186
r_nbtor_refined	0.171
r_nbd_other	0.166
r_symmetry_hbond_refined	0.148
r_xyhbond_nbd_refined	0.144
r_chiral_restr	0.099
r_nbtor_other	0.081
r_xyhbond_nbd_other	0.035
r_bond_refined_d	0.016
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	5427
Nucleic Acid Atoms
Solvent Atoms	618
Heterogen Atoms	50

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
MOSFLM	data reduction
SHELXD	phasing
autoSHARP	phasing