6SEB

Cold-adapted beta-D-galactosidase from Arthrobacter sp. 32cB in complex with IPTG

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	BESSY BEAMLINE 14.2
Synchrotron site	BESSY
Beamline	14.2
Temperature [K]	100
Detector technology	PIXEL
Collection date	2017-01-27
Detector	DECTRIS PILATUS3 2M
Wavelength(s)	0.918400
Spacegroup name	P 31 2 1
Unit cell lengths	137.069, 137.069, 126.795
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	46.539 - 2.272
R-factor	0.1588
Rwork	0.157
R-free	0.20540
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	6etz
RMSD bond length	0.007
RMSD bond angle	0.873
Data reduction software	XDS
Data scaling software	XSCALE
Phasing software	PHENIX
Refinement software	PHENIX (1.12_2829)

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	46.539	46.539	2.360
High resolution limit [Å]	2.220	6.610	2.220
Rmerge	0.122	0.027	1.277
Rmeas	0.128	0.029	1.346
Total number of observations	686545
Number of reflections	67951	2765	10776
<I/σ(I)>	17.26	68.48	1.74
Completeness [%]	99.8	99.6	99
Redundancy	10.104	9.542	10.057
CC(1/2)	0.999	1.000	0.713

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	6	291	40% Tacsimate pH 6.0