2VW2

Crystal structure of the NanB sialidase from Streptococcus pneumoniae

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SLI	PDB ENTRY 1SLI

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		9.5		10% PEG 8000, 0.15M NACL, 0.1M CHES PH 9.5

Crystal Properties
Matthews coefficient	Solvent content
2.19	43.51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 76.642	α = 90
b = 82.684	β = 90
c = 116.7	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	RIGAKU SATURN 944			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF

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	1.7	30	92.1	0.08	8.9	3		75667

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	1.7	1.76	63		0.36	2.2	3

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 1SLI	1.7	67.42	71846	3758	92	0.196	0.194	0.229	RANDOM	18.51

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]
-0.5			-0.84		1.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.022
r_dihedral_angle_3_deg	12.31
r_dihedral_angle_4_deg	11.128
r_dihedral_angle_1_deg	6.364
r_scangle_it	1.742
r_scbond_it	1.106
r_angle_refined_deg	1.099
r_mcangle_it	0.796
r_mcbond_it	0.463
r_nbtor_refined	0.301
r_nbd_refined	0.183
r_symmetry_vdw_refined	0.136
r_xyhbond_nbd_refined	0.122
r_symmetry_hbond_refined	0.107
r_chiral_restr	0.073
r_bond_refined_d	0.008
r_gen_planes_refined	0.003
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	5189
Nucleic Acid Atoms
Solvent Atoms	797
Heterogen Atoms	32

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing