3KI0

Catalytic fragment of Cholix toxin from Vibrio Cholerae in complex with inhibitor GP-D

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	298	5% PEG-8000, 0.02 M KH2PO4, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.96

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 40.45	α = 90
b = 64.89	β = 90
c = 78.48	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	MARMOSAIC 225 mm CCD		2008-01-23	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CLSI BEAMLINE 08ID-1	0.97934	CLSI	08ID-1

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	1.29	40	97.7	0.057	15.54	6.9		51669		-3	20.179

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)
	1.29	1.42	91.9		0.475	3.9	6.5	11984

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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 2Q6M	1.29	19.31	51602	2594	98.14	0.175	0.174	0.203	RANDOM	19.21

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]
0.88			-0.62		-0.26

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.516
r_dihedral_angle_4_deg	14.676
r_dihedral_angle_3_deg	12.256
r_sphericity_free	6.805
r_sphericity_bonded	5.858
r_dihedral_angle_1_deg	5.714
r_scangle_it	3.768
r_scbond_it	2.881
r_mcangle_it	2.178
r_rigid_bond_restr	1.82
r_mcbond_it	1.493
r_angle_refined_deg	1.454
r_nbtor_refined	0.308
r_nbd_refined	0.197
r_symmetry_vdw_refined	0.184
r_xyhbond_nbd_refined	0.129
r_symmetry_hbond_refined	0.103
r_chiral_restr	0.099
r_bond_refined_d	0.013
r_gen_planes_refined	0.008

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1546
Nucleic Acid Atoms
Solvent Atoms	326
Heterogen Atoms	43

Software

Software
Software Name	Purpose
XSCALE	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
Macromolecular	data collection
XDS	data reduction
MOLREP	phasing