1Z7H

2.3 Angstrom crystal structure of tetanus neurotoxin light chain

Experimental procedure

Experimental method	MAD
Source type	SYNCHROTRON
Source details	SSRL BEAMLINE BL9-2
Synchrotron site	SSRL
Beamline	BL9-2
Temperature [K]	100
Detector technology	CCD
Collection date	2002-06-16
Detector	ADSC QUANTUM 315
Wavelength(s)	0.9673, 1.0400
Spacegroup name	C 2 2 2
Unit cell lengths	105.350, 176.860, 57.230
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	38.760 - 2.300
R-factor	0.219
Rwork	0.212
R-free	0.21600
Structure solution method	MAD/MR phase combination
Starting model (for MR)	pdb 1F82 entry
RMSD bond length	0.007
RMSD bond angle	1.316
Data reduction software	MOSFLM
Data scaling software	SCALA
Phasing software	CNS
Refinement software	CNS

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	40.000	2.260
High resolution limit [Å]	2.200	2.200
Number of reflections	55182
Completeness [%]	99.9	99.9

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7.4	293	PEG 3350, MAGNESIUM NITRATE, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 20K