3DGJ

NNFGAIL segment from Islet Amyloid Polypeptide (IAPP or amylin)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		293	20% ethylene glycol, no buffer, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 26.19	α = 90
b = 4.897	β = 90
c = 31.38	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		2007-10-09	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID13	1.0	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	1.8	20.11	98.8	0.158	8.98		481	481		-3	13.747

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)
	1.8	1.9	98.4		0.294	3.8

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	1.8	20.11	481	481	49	98.77	0.166	0.166	0.16	0.217	RANDOM	5.491

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]
0.11			-0.36		0.25

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.048
r_dihedral_angle_3_deg	12.588
r_dihedral_angle_1_deg	5.404
r_mcangle_it	1.484
r_mcbond_it	1.26
r_angle_refined_deg	1.15
r_scangle_it	1.133
r_angle_other_deg	0.811
r_scbond_it	0.802
r_mcbond_other	0.277
r_symmetry_vdw_other	0.204
r_nbd_other	0.179
r_nbtor_refined	0.153
r_xyhbond_nbd_refined	0.131
r_symmetry_vdw_refined	0.112
r_chiral_restr	0.08
r_nbtor_other	0.077
r_symmetry_hbond_refined	0.04
r_nbd_refined	0.028
r_bond_refined_d	0.007
r_gen_planes_refined	0.002
r_bond_other_d	0.001
r_gen_planes_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	59
Nucleic Acid Atoms
Solvent Atoms	1
Heterogen Atoms

Software

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