4R0W

Vvtgvta, an amyloid forming segment from alpha synuclein, residues 70-76

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	298	isopropanol, sodium cacodylate, pH 6.5, vapor diffusion, hanging drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.4	12.42

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.367	α = 90
b = 4.823	β = 107.89
c = 15.692	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	CCD	MAR CCD 165 mm		2007-07-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID13	0.895432	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	93.9	0.193	5	3.1	650	650		-3	17.4

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	88.3		0.177		2.3	121

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	ideal beta strand	1.5	23.97	648	648	62	93.51	0.2467	0.2467	0.244	0.2739	RANDOM	11.91

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]
0.37		0.53	-3		2.95

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	6.614
r_dihedral_angle_1_deg	3.33
r_mcangle_it	2.981
r_mcbond_it	2.408
r_scbond_it	1.568
r_angle_refined_deg	1.432
r_scangle_it	1.124
r_angle_other_deg	0.873
r_mcbond_other	0.371
r_nbd_other	0.248
r_symmetry_vdw_other	0.213
r_nbtor_refined	0.17
r_symmetry_hbond_refined	0.155
r_nbtor_other	0.097
r_chiral_restr	0.087
r_symmetry_vdw_refined	0.07
r_nbd_refined	0.064
r_bond_refined_d	0.016
r_gen_planes_refined	0.007
r_bond_other_d	0.001
r_gen_planes_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	45
Nucleic Acid Atoms
Solvent Atoms	1
Heterogen Atoms

Software

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