7CWD

Crystal structure of beta-galactosidase II from Bacillus circulans in complex with beta-D-galactopyranosyl disaccharide

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	PAL/PLS BEAMLINE 7A (6B, 6C1)
Synchrotron site	PAL/PLS
Beamline	7A (6B, 6C1)
Temperature [K]	100
Detector technology	CCD
Collection date	2017-11-04
Detector	ADSC QUANTUM 270
Wavelength(s)	0.97934
Spacegroup name	P 32 2 1
Unit cell lengths	159.499, 159.499, 96.326
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	33.280 - 2.000
Rwork	0.189
R-free	0.21800
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4ypj
Data reduction software	HKL-2000
Data scaling software	HKL-2000
Phasing software	MOLREP
Refinement software	REFMAC (v5.0)

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	50.000	50.000	2.030
High resolution limit [Å]	2.000	5.430	2.000
Rmerge	0.082	0.054	0.297
Rmeas	0.090	0.058	0.333
Rpim	0.036	0.022	0.146
Total number of observations	497629
Number of reflections	89811	4787	4620
<I/σ(I)>	11.4
Completeness [%]	94.8	96.4	99.4
Redundancy	5.5	6.8	4.8
CC(1/2)		0.997	0.940

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION		293	Ammonium sulfate, Sodium acetate, Sodium chloride