6G9G

Crystal Structure of the TASNSS segment from the R4-R5 loop of the E. coli Biofilm-associated CsgA Curli protein

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		293	Reservoir contained 0.2 M Lithium sulfate, 0.1 M Tris-HCl pH 8.5, 30%(w/v) PEG 4000, and 10 mM of the TAIVVQ peptide

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 9.32	α = 90
b = 12.55	β = 90
c = 21.29	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		2016-05-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PETRA III, EMBL c/o DESY BEAMLINE P14 (MX2)	0.9763	PETRA III, EMBL c/o DESY	P14 (MX2)

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim 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	1.6	10.81	97.7	0.222	0.237	0.986	6.07	8.686		389			18.334

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.6	1.85	97.7		0.55	0.582	0.89	2.77	9.231

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.6	10.81	349	39	97.73	0.1079	0.1043	0.1351	RANDOM	8.967

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]
-0.96			1.3		-0.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	25.562
r_dihedral_angle_3_deg	5.767
r_dihedral_angle_1_deg	4.272
r_angle_refined_deg	1.338
r_angle_other_deg	0.99
r_chiral_restr	0.087
r_bond_other_d	0.053
r_bond_refined_d	0.016
r_gen_planes_refined	0.005
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	39
Nucleic Acid Atoms
Solvent Atoms	1
Heterogen Atoms

Software

Software
Software Name	Purpose
XDS	data reduction
XSCALE	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.