Experiment: 4GB1

Synthesis and Evaluation of Novel 3-C-alkylated-Neu5Ac2en Derivatives as Probes of Influenza Virus Sialidase 150-loop flexibility

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2HT5	PDB ENTRY 2HT5

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	300	50% MPD, pH 7, VAPOR DIFFUSION, HANGING DROP, temperature 300K

Crystal Properties
Matthews coefficient	Solvent content
2.58	52.25

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 90.501	α = 90
b = 90.501	β = 90
c = 108.731	γ = 90

Symmetry
Space Group	I 4

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU		2008-08-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.62	32	93.38			13207	12336	1.34

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 2HT5	2.62	31.997	1.34	12336	613	93.38	0.2076	0.2038	0.199	0.2799	0.2696

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]
0.0003			0.0003		-0.0006

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	14.294
f_angle_d	1.295
f_chiral_restr	0.082
f_bond_d	0.008
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3002
Nucleic Acid Atoms
Solvent Atoms	118
Heterogen Atoms	30

Software

Software
Software Name	Purpose
StructureStudio	data collection
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling