7QEC

Crystal structure of SlpA - domain II, domain that is involved in the self-assembly of the S-layer from Lactobacillus amylovorus

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	SLS BEAMLINE X06SA
Synchrotron site	SLS
Beamline	X06SA
Temperature [K]	100
Detector technology	CCD
Collection date	2012-08-12
Detector	MARMOSAIC 225 mm CCD
Wavelength(s)	0.9999
Spacegroup name	P 41 21 2
Unit cell lengths	38.633, 38.633, 142.441
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	35.610 - 1.950
R-factor	0.1903
Rwork	0.185
R-free	0.24450
Structure solution method	AB INITIO PHASING
RMSD bond length	0.008
RMSD bond angle	0.779
Data reduction software	XDS
Phasing software	Arcimboldo
Refinement software	PHENIX (1.16_3549)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	35.610	2.021
High resolution limit [Å]	1.950	1.951
Rmerge	0.114	0.900
Rmeas	0.118
Rpim	0.026	0.244
Number of reflections	14655	682
<I/σ(I)>	17.79
Completeness [%]	98.1
Redundancy	18.9
CC(1/2)	0.999	0.759

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP		293	Morpheus screen condition #1-24 (30 mM of each halogen (sodium fluoride, sodium bromide and sodium iodide), 0.1 M Bicine/Trizma base pH 8.5 with 12.5% v/v MPD, 12.5 % PEG 1000 and 12.5 % w/v PEG 3350). Protein stock solution of 4.18 mg/mL in 10 mM Hepes pH 7 and 50 mM NaCl. Drops: 0.5 + 0.5uL