1H4V

HISTIDYL-TRNA SYNTHETASE from Thermus Thermophilus (ligand free)

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	ESRF BEAMLINE ID2
Synchrotron site	ESRF
Beamline	ID2
Temperature [K]	100
Detector technology	IMAGE PLATE
Collection date	1997-04-15
Detector	MARRESEARCH
Spacegroup name	C 2 2 21
Unit cell lengths	111.130, 102.150, 91.510
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	12.000 - 2.400
R-factor	0.208
Rwork	0.208
R-free	0.25600
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	1adj
RMSD bond length	0.006
RMSD bond angle	1.264
Data reduction software	MOSFLM
Data scaling software	CCP4
Phasing software	AMoRE
Refinement software	CNS (1.0)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	12.000	2.460
High resolution limit [Å]	2.400	2.400
Rmerge	0.074	0.137 *
Total number of observations	39592 *
Number of reflections	17744 *
<I/σ(I)>		4.9
Completeness [%]	86.7	72.1
Redundancy	2.2	1.8

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	Vapor diffusion, hanging drop *	7.6 *	295 *	DESCRIBED IN REFERENCE 1., pH 7.00

Crystallization Reagents in Literatures

ID	crystal ID	solution	reagent name	concentration (unit)	details
1	1	drop	protein	10-12 (mg/ml)
2	1	drop	Tris Maleate	50 (mM)
3	1	drop		3 (mM)
4	1	drop	dithiothreitol	0.5 (mM)
5	1	drop		1 (mM)
6	1	reservoir	ammonium sulfate	46 (%(w/v)sat)
7	1	reservoir	glycerol	10 (%(w/v))
8	1	reservoir	Tris Maleate	50 (mM)