4JXX

Crystal structure of E coli E. coli glutaminyl-tRNA synthetase bound to tRNA(Gln)(CUG) and ATP from novel cryostabilization conditions

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	ALS BEAMLINE 4.2.2
Synchrotron site	ALS
Beamline	4.2.2
Temperature [K]	100
Detector technology	CCD
Collection date	2012-01-06
Detector	NOIR-1
Wavelength(s)	1.0
Spacegroup name	C 2 2 21
Unit cell lengths	93.660, 234.280, 113.020
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	41.100 - 2.300
R-factor	0.2286
Rwork	0.226
R-free	0.25790
Structure solution method	FOURIER SYNTHESIS
Starting model (for MR)	1gtr
RMSD bond length	0.006
RMSD bond angle	1.104
Data reduction software	d*TREK
Data scaling software	d*TREK
Phasing software	CNS
Refinement software	CNS

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	41.100	2.380
High resolution limit [Å]	2.300	2.300
Rmerge	0.066
Number of reflections	55132
<I/σ(I)>	12
Completeness [%]	99.2	97.4
Redundancy	7.3

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7	290	0.4 w/v sodium citrate, 40 mM PIPES , 20 mM MgSO4, 20 mM b-mercaptoethanol , pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 290.0K