4JTM

Structure of the N0 domain of the type II secretin from enterotoxigenic Escherichia coli

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	277	0.1M TRIS-HCL, 30% PEG2000-MME, pH 8.5, vapor diffusion, sitting drop, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.54	51.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 113.46	α = 90
b = 113.46	β = 90
c = 24.45	γ = 120

Symmetry
Space Group	P 61

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		2011-05-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL12-2	0.9795	SSRL	BL12-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	1.43	49.18	90.8	0.044	19.09			59059		-3	25.311

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.43	1.47	57.4		0.672	2.07

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	1.43	49.18	31494	1612	92.74	0.1869	0.1852	0.2192	RANDOM	22.4763

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]
-0.16	-0.16		-0.16		0.53

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.69
r_dihedral_angle_4_deg	26.478
r_dihedral_angle_3_deg	12.9
r_dihedral_angle_1_deg	5.88
r_angle_refined_deg	1.694
r_mcangle_it	1.308
r_mcbond_it	0.819
r_mcbond_other	0.812
r_angle_other_deg	0.808
r_chiral_restr	0.097

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.69
r_dihedral_angle_4_deg	26.478
r_dihedral_angle_3_deg	12.9
r_dihedral_angle_1_deg	5.88
r_angle_refined_deg	1.694
r_mcangle_it	1.308
r_mcbond_it	0.819
r_mcbond_other	0.812
r_angle_other_deg	0.808
r_chiral_restr	0.097
r_bond_refined_d	0.015
r_gen_planes_refined	0.009
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1254
Nucleic Acid Atoms
Solvent Atoms	208
Heterogen Atoms

Software

Software
Software Name	Purpose
XSCALE	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
XDS	data reduction

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.