Experiment: 3NSS

The 2009 pandemic H1N1 neuraminidase N1 lacks the 150-cavity in its active sites

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	291	0.16M calcium acetate hydrate, 0.08M sodium cacodylate trihydrate, 14.4% polyethylene glycol 8000, 20% glycerol , pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.83	56.58

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 118.537	α = 90
b = 137.857	β = 90
c = 118.512	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	MARMOSAIC 225 mm CCD		2010-01-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRF BEAMLINE BL17U	0.9793	SSRF	BL17U

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	1.9	50	100	0.163	0.163	14.4	8.3	75980	75980	2	4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	1.902	31.977	0.1	73349	73349	3688	96.3	0.1719	0.1706	0.1693	0.1955	0.192	RANDOM

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]
-1.1145			3.3061		-2.1917

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	19.513
f_angle_d	0.81
f_chiral_restr	0.055
f_bond_d	0.003
f_plane_restr	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5982
Nucleic Acid Atoms
Solvent Atoms	889
Heterogen Atoms	113

Software

Software
Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
PHENIX	refinement
HKL-2000	data reduction
SCALEPACK	data scaling