Experiment: 7QEH

LTA-binding domain of SlpA, the S-layer protein from Lactobacillus amylovorus

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		293	Morpheus screen condition #2-29 (20 mM of each carboxylic acid (sodium formate, ammonium acetate, sodium citrate tribasic dehydrate, sodium potassium tartrate tetrahydrate, and sodium oxamate), 0.1 M sodium HEPES- MOPS pH 7.5 with 20 % v/v PEG 500 MME and 10 % w/v PEG 20000). A protein stock solution of 20 mg/mL in 10 mM HEPES pH 7 and 100 mM NaCl was used. 1uL drop with 1:1 ration protein to reservoir solution.

Crystal Properties
Matthews coefficient	Solvent content
1.83	32.75

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 30.561	α = 90
b = 43.481	β = 90
c = 89.107	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 6M-F		2015-03-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.9789	ESRF	ID23-1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.67	39.08	99.39	0.109	0.114	0.032	0.999	19.84	12.2		26186			18.71

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.67	1.734			0.86	0.316	0.805	3.2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	SAD	FREE R-VALUE	1.67	39.08	1.34	26185	2612	99.16	0.1655	0.1626	0.1706	0.1904	0.198	24.47

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	12.928
f_angle_d	0.9983
f_chiral_restr	0.0666
f_bond_d	0.0091
f_plane_restr	0.0056

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	965
Nucleic Acid Atoms
Solvent Atoms	75
Heterogen Atoms	5

Software

Software
Software Name	Purpose
XDS	data reduction
SHELXCD	phasing
SHELXE	model building
PHENIX	refinement
Coot	model building