6G8C

Crystal Structure of the Amyloid-like IYQYGG segment from the R1 repeat of the E. coli Biofilm-associated CsgA Curli protein

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	PETRA III, EMBL c/o DESY BEAMLINE P14 (MX2)
Synchrotron site	PETRA III, EMBL c/o DESY
Beamline	P14 (MX2)
Temperature [K]	100
Detector technology	PIXEL
Collection date	2016-05-02
Detector	DECTRIS PILATUS 6M-F
Wavelength(s)	0.9763
Spacegroup name	C 1 2 1
Unit cell lengths	42.170, 4.760, 19.600
Unit cell angles	90.00, 102.43, 90.00

Refinement procedure

Resolution	19.140 - 1.650
R-factor	0.1478
Rwork	0.145
R-free	0.17790
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	Ideal beta-strand
RMSD bond length	0.019
RMSD bond angle	1.673
Data reduction software	XDS
Data scaling software	XSCALE
Phasing software	PHASER
Refinement software	REFMAC

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	19.140	19.140	1.850
High resolution limit [Å]	1.650	3.690	1.650
Rmerge	0.099	0.054	0.326
Rmeas	0.111	0.062	0.359
Number of reflections	545	59	141
<I/σ(I)>	8.66	16.47	3.21
Completeness [%]	97.3	90.8	100
Redundancy	5.231	4.237	5.901
CC(1/2)	0.996	0.996	0.977

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP		293	Reservoir contained 0.1 M Sodium acetate pH 4.6 and 2.0 M Sodium formate