3IFL

X-ray structure of amyloid beta peptide:antibody (Abeta1-7:12A11) complex

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9	295	Protein: 15 mg/ml, 10 mM Hepes, pH 7.5, 75 mM NaCl. Protein:peptide molar ratio: 1:1.1. Reservoir: 32% PEG400, 0.1M Tris pH 9.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.16	43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.97	α = 90
b = 85.98	β = 94.67
c = 57.45	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	MARMOSAIC 325 mm CCD		2007-06-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.97946	SSRL	BL11-1

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	57.26		0.052				65078

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.5	57.26	65017	3293	97.75	0.17954	0.17813	0.20608	RANDOM	15.793

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]
0.04		-0.43	0.11		-0.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.915
r_dihedral_angle_4_deg	20.221
r_dihedral_angle_3_deg	11.668
r_dihedral_angle_1_deg	6.245
r_scangle_it	2.162
r_mcangle_it	2.044
r_scbond_it	1.548
r_angle_refined_deg	1.373
r_mcbond_it	1.316
r_nbtor_refined	0.312
r_symmetry_vdw_refined	0.22
r_symmetry_hbond_refined	0.216
r_nbd_refined	0.202
r_xyhbond_nbd_refined	0.174
r_chiral_restr	0.102
r_bond_refined_d	0.006
r_gen_planes_refined	0.006
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3376
Nucleic Acid Atoms
Solvent Atoms	582
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement