4R0U

Tgvtava, an amyloid forming segment from alpha synuclein, residues 72-78

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
in silico model	Other		ideal beta strand

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		298	0.2M magnesium formate, vapor diffusion, hanging drop, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.52	19.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 15.584	α = 90
b = 4.742	β = 98.96
c = 25.806	γ = 90

Symmetry
Space Group	P 1 21 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		2007-07-13	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	1.38	90	83.8	0.151	8.4	3.4	798	798		-3	18.5

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	1.4	1.51	61.2		0.229		1.8	115

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	1.38	25.49	798	798	90	86.18	0.2045	0.2045	0.2027	0.2175	RANDOM	16.624

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]
0.34		0.22	-0.21		-0.19

RMS Deviations
Key	Refinement Restraint Deviation
r_mcangle_it	5.827
r_dihedral_angle_1_deg	4.887
r_dihedral_angle_3_deg	3.831
r_mcbond_it	3.692
r_mcbond_other	2.327
r_angle_refined_deg	1.312
r_angle_other_deg	0.544
r_chiral_restr	0.06
r_bond_refined_d	0.01
r_bond_other_d	0.002
r_gen_planes_refined	0.002
r_gen_planes_other

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	43
Nucleic Acid Atoms
Solvent Atoms	7
Heterogen Atoms

Software

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