7QFL

Crystal structure of S-layer protein SlpA from Lactobacillus acidophilus, domain II (aa 199-308)

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	PETRA III, DESY BEAMLINE P11
Synchrotron site	PETRA III, DESY
Beamline	P11
Temperature [K]	100
Detector technology	PIXEL
Collection date	2017-07-01
Detector	DECTRIS PILATUS 6M-F
Wavelength(s)	1.0332
Spacegroup name	P 31 2 1
Unit cell lengths	55.851, 55.851, 63.732
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	48.368 - 1.400
Rwork	0.170
R-free	0.19810
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	7qec
RMSD bond length	0.016
RMSD bond angle	2.032
Data reduction software	XDS
Data scaling software	Aimless
Phasing software	PHASER
Refinement software	REFMAC (5.8.0267)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	48.370	1.420
High resolution limit [Å]	1.400	1.400
Rmerge	0.085	0.850
Rmeas	0.095	0.953
Rpim	0.042	0.427
Number of reflections	23163	21345
<I/σ(I)>	13.6
Completeness [%]	100.0
Redundancy	9.5	9.1
CC(1/2)	0.997	0.821

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP		293.15	protein stock solution of 18.5 mg/mL in 20 mM Hepes pH 8 and 100 mM NaCl; JCSG+ screen condition 1-1 (0.18 M lithium sulfate, 90 mM sodium acetate pH 4.5 and 45 % w/v PEG 400) with protein end concentration of 12.3 mg/mL corresponding to 66.67 % of protein solution in the 1.5 uL drop.