2QWB

THE X-RAY STRUCTURE OF A COMPLEX OF SIALIC ACID AND A DRUG RESISTANT VARIANT R292K OF TERN N9 INFLUENZA VIRUS NEURAMINIDASE

Experimental procedure

Source type	ROTATING ANODE
Source details	MACSCIENCE M18X
Temperature [K]	107
Detector technology	IMAGE PLATE
Collection date	1996-08-27
Detector	RIGAKU RAXIS II
Spacegroup name	I 4 3 2
Unit cell lengths	180.700, 180.700, 180.700
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	6.000 - 2.000
R-factor	0.166
Rwork	0.166
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	TERN N9 R292K MUTANT NEURAMINIDASE
RMSD bond length	0.013
RMSD bond angle	1.910
Data reduction software	PROTEIN (V4)
Data scaling software	PROTEIN (V. 4)
Phasing software	X-PLOR (3.0)
Refinement software	X-PLOR (3.0)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	100.000	1.863
High resolution limit [Å]	1.800	1.800
Rmerge	0.100
Total number of observations	163196 *
Number of reflections	35098
Completeness [%]	74.8	24
Redundancy	4.65

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	Vapor diffusion *	6.6 *		Laver, W.G., (1984) Virology, 137, 314. *

Crystallization Reagents in Literatures

ID	crystal ID	solution	reagent name	concentration (unit)	details
1	1	drop	potassium phosphate	1.7 (M)
2	1	drop	protein	10-15 (mg/ml)
3	1	reservoir	potassium phosphate	1.9 (M)