2W68

ENHANCING THE RECEPTOR AFFINITY OF THE SIALIC ACID-BINDING DOMAIN OF VIBRIO CHOLERAE SIALIDASE THROUGH MULTIVALENCY

X-RAY DIFFRACTION

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Crystallization

Crystal Properties
Matthews coefficient	Solvent content
4.32	71.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 138.6	α = 90
b = 197.62	β = 90
c = 82.98	γ = 90

Symmetry
Space Group	C 2 2 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 CCD			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-2		ESRF	ID14-2

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	30	95	0.06	15.8	4.9		37806

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	2.57	89		0.41	2.7	3.2

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	MOLECULAR REPLACEMENT	THROUGHOUT	2.5	28.88	35893	1911	95.4	0.217	0.215	0.256	RANDOM	46.24

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]
0.07			1.05		-1.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.244
r_dihedral_angle_4_deg	19.709
r_dihedral_angle_3_deg	18.285
r_dihedral_angle_1_deg	7.941
r_scangle_it	3.559
r_scbond_it	2.185
r_angle_refined_deg	2.02
r_mcangle_it	1.557
r_mcbond_it	0.914
r_symmetry_vdw_refined	0.39
r_nbtor_refined	0.326
r_nbd_refined	0.247
r_symmetry_hbond_refined	0.246
r_xyhbond_nbd_refined	0.166
r_chiral_restr	0.107
r_bond_refined_d	0.018
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4433
Nucleic Acid Atoms
Solvent Atoms	133
Heterogen Atoms	130

Software

Software
Software Name	Purpose
REFMAC	refinement
PHASER	phasing