Experiment: 8ANK

Structure of the amyloid-forming peptide pEFIAWL from human GLP-1

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	Other		ideal 5 residue beta strand form the software Fragon

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	EVAPORATION, RECRYSTALLIZATION		310	EFIAWL was dissolved in 0.15 - 0.5 mg/ml concentration in a solution containing 30 % acetonitrile and 0.1 % TFA and incubated at 310K for several weeks.

Crystal Properties
Matthews coefficient	Solvent content
1.45	15.46

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 20.71	α = 90
b = 9.545	β = 92.74
c = 22.396	γ = 90

Symmetry
Space Group	C 1 2 1

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	RIGAKU HyPix-6000HE		2021-07-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU PhotonJet-R	1.54184

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.3	11.19	99.83	0.106	0.995	13.6	4.78		1157			5.48

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.3	1.35	99.13		0.331	0.893	3.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	FREE R-VALUE	ideal 5 residue beta strand form the software Fragon	1.3	11.19	1.42	1153	121	99.48	0.1039	0.1013	0.106	0.1298	0.1356	5.34

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	22.7172
f_angle_d	1.9108
f_chiral_restr	0.1116
f_bond_d	0.0146
f_plane_restr	0.009

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	55
Nucleic Acid Atoms
Solvent Atoms	2
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
CrysalisPro	data reduction
CrysalisPro	data scaling
Fragon	phasing