6ZJU

Cold-adapted beta-D-galactosidase from Arthrobacter sp. 32cB mutant E441Q in complex with saccharose

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	2019-04-11
Detector	DECTRIS PILATUS 2M
Wavelength(s)	0.9814
Spacegroup name	P 31 2 1
Unit cell lengths	138.241, 138.241, 127.568
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	43.649 - 1.750
R-factor	0.1697
Rwork	0.170
R-free	0.18180
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	6etz
RMSD bond length	0.010
RMSD bond angle	1.083
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]	43.649	43.649	1.860
High resolution limit [Å]	1.750	5.220	1.750
Rmerge	0.129	0.026	4.034
Rmeas	0.136	0.027	4.256
Total number of observations	1425743
Number of reflections	141154	5597	22540
<I/σ(I)>	14.42	74.66	0.56
Completeness [%]	99.9	99.8	99.7
Redundancy	10.101	9.624	9.825
CC(1/2)	0.999	1.000	0.322

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP		293	35% TacsimateTM pH 7.0