4R0P

Ifqins, an amyloid forming segment from human lysozyme spanning residues 56-61

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	reservoir contained 0.1M Bis-Tris pH 6.5, 3.0M Sodium Chloride, vapor diffusion, hanging drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.42	13.51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 19.607	α = 90
b = 4.839	β = 90
c = 43.22	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	CCD	MAR CCD 165 mm		2006-05-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID13	0.9466	ESRF	ID13

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	1.5	90	93.8	0.181	5.8	13.1	753	753		-3	14.5

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	1.5	1.62	81		0.422		8.8	128

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.52	21.61	732	77	92.89	0.1623	0.1623	0.1578	0.2008	RANDOM	4.924

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]
0.41			0.26		-0.67

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.503
r_dihedral_angle_3_deg	7.721
r_dihedral_angle_1_deg	5.547
r_mcangle_it	2.474
r_scbond_it	2.129
r_scangle_it	2.005
r_angle_refined_deg	1.479
r_mcbond_it	1.435
r_nbtor_refined	0.324
r_nbd_refined	0.208

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.503
r_dihedral_angle_3_deg	7.721
r_dihedral_angle_1_deg	5.547
r_mcangle_it	2.474
r_scbond_it	2.129
r_scangle_it	2.005
r_angle_refined_deg	1.479
r_mcbond_it	1.435
r_nbtor_refined	0.324
r_nbd_refined	0.208
r_chiral_restr	0.129
r_symmetry_vdw_refined	0.1
r_bond_refined_d	0.013
r_symmetry_hbond_refined	0.01
r_xyhbond_nbd_refined	0.007
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	51
Nucleic Acid Atoms
Solvent Atoms	2
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

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.