2O2L

Crystal structure of human heat-labile enterotoxin in complex with a blood group A antigen analog

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
2.41	48.93

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 117.799	α = 90
b = 166.965	β = 90
c = 57.478	γ = 90

Symmetry
Space Group	P 21 21 2

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	MAR CCD 165 mm	mirrors	2005-02-26	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX II BEAMLINE I911-5	0.907	MAX II	I911-5

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	96.2	99	0.033	24.9	6.1		38366

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	2.53	2.6	94.2		0.08	12.4	3.7

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1DJR	2.53	20	36444	1922	99.05	0.18351	0.1807	0.23703	RANDOM	13.367

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]
0.76			-0.36		-0.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.329
r_dihedral_angle_4_deg	19.501
r_dihedral_angle_3_deg	14.983
r_dihedral_angle_1_deg	6.456
r_scangle_it	1.835
r_angle_other_deg	1.561
r_angle_refined_deg	1.45
r_scbond_it	1.327
r_mcangle_it	0.847
r_mcbond_it	0.754
r_nbd_refined	0.238
r_symmetry_vdw_refined	0.232
r_symmetry_vdw_other	0.211
r_nbd_other	0.204
r_symmetry_hbond_refined	0.183
r_nbtor_refined	0.177
r_xyhbond_nbd_refined	0.165
r_chiral_restr	0.097
r_nbtor_other	0.097
r_mcbond_other	0.097
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d	0.003
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8045
Nucleic Acid Atoms
Solvent Atoms	278
Heterogen Atoms	570

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling
AMoRE	phasing