2PG3

Crystal structure of a Queuosine biosynthesis protein queC (ECA1155) from Erwinia carotovora subsp. atroseptica SCRI1043 at 2.40 A resolution

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	SSRL BEAMLINE BL11-1
Synchrotron site	SSRL
Beamline	BL11-1
Temperature [K]	100
Detector technology	CCD
Collection date	2007-03-11
Detector	MARMOSAIC 325 mm CCD
Wavelength(s)	0.97917
Spacegroup name	P 41 21 2
Unit cell lengths	78.154, 78.154, 77.755
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	27.566 - 2.400
R-factor	0.188
Rwork	0.186
R-free	0.22300
Structure solution method	SAD
RMSD bond length	0.017
RMSD bond angle	1.592
Data reduction software	MOSFLM
Data scaling software	SCALA
Phasing software	SOLVE
Refinement software	REFMAC (5.2.0005)

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	27.566	27.630	2.460
High resolution limit [Å]	2.400	10.730	2.400
Rmerge	0.086	0.056	0.649
Total number of observations		1304	8537
Number of reflections	9920
<I/σ(I)>	6.4	10.9	1.2
Completeness [%]	99.9	94.4	100
Redundancy	13.5	9.4	12

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	8.1	277	NANODROP, 0.2M Li3Citrate, 20.0% PEG 3350, No Buffer pH 8.1, VAPOR DIFFUSION, SITTING DROP, temperature 277K