2D1P

crystal structure of heterohexameric TusBCD proteins, which are crucial for the tRNA modification

Experimental procedure

Experimental method	MAD
Source type	SYNCHROTRON
Source details	SPRING-8 BEAMLINE BL41XU
Synchrotron site	SPring-8
Beamline	BL41XU
Temperature [K]	100
Detector technology	CCD
Collection date	2004-10-11
Detector	ADSC QUANTUM 315
Wavelength(s)	0.979521, 0.979829, 0.9830
Spacegroup name	P 41 21 2
Unit cell lengths	141.392, 141.392, 135.686
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	50.000 - 2.150
R-factor	0.2094
Rwork	0.209
R-free	0.24230
Structure solution method	MAD
RMSD bond length	0.006
RMSD bond angle	1.200
Data reduction software	HKL-2000
Data scaling software	HKL-2000
Phasing software	SHARP
Refinement software	CNS

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	50.000	2.230
High resolution limit [Å]	2.150	2.150
Rmerge	0.076	0.253
Number of reflections	74991
<I/σ(I)>	43.8	7.1
Completeness [%]	99.9	99.9
Redundancy	11.9	9.9

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	6.8	293	0.9-1.1M lithium sulfate, 9mM Mg-acetate, 45mM Na-cacodylate buffer (pH 6.8), 2.5% tert-butanol, and 10mM Tris-HCl buffer (pH8.5), VAPOR DIFFUSION, HANGING DROP, temperature 293K