REL RCSB RCSB RCSB 2015-04-22 2015-04-29 2015-04-29 2015-04-29 3D reconstruction from 188 out of 450 fibrils of Abeta(1-40), selected by mean crossover-to-crossover distance (130 to 150 nm) and curvature (straightest 188 filaments were selected) Rohou A Grigorieff N Rohou A Grigorieff N Frealix: model-based refinement of helical filament structures from electron micrographs. J.STRUCT.BIOL. 186 234 244 2014 24657230 doi:10.1016/j.jsb.2014.03.012 Sachse C Fandrich M Grigorieff N Paired beta-sheet structure of an Abeta(1-40) amyloid fibril revealed by electron microscopy. PROC.NAT.ACAD.SCI.USA 105 7462 7466 2008 18483195 doi:10.1073/pnas.0712290105 human Abeta(1-40) human Abeta(1-40) Helical assembly 1 Amyloid beta peptide (1-40) Homo sapiens human false helical filament 1 7.8
50 mM borate
Quantifoil R1.2/1.3 Cu 400 mesh grids
 ETHANE HOMEMADE PLUNGER
Vitrification carried out in cold room at 277 K.
Blot for 7 seconds before plunging FEI TECNAI F30 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.0 2.027 3.629 59000.0 GATAN LIQUID NITROGEN 2006-02-09 KODAK SO-163 FILM ZEISS SCAI 7.0 63 35
Filaments were processed using Frealix, including restraints on all refinement parameters. Data up to 20A were used in early stages of refinement. This limit was gradually increased to 9A.
4.8 0.734 C2 OTHER 7.1 OTHER Frealix
Data up to 20A were used in early stages of the refinement. This limit was gradually increased to 9A.
Defocus estimated for each helical subunit
 emd_6328.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 510 510 510 0 0 0 510 510 510 612.0 612.0 612.0 90.0 90.0 90.0 X Y Z -124.848876950000005 910.867004390000034 -1.64349163 56.7017746 1.2 1.2 1.2 360.0 AUTHOR 3D reconstruction of Abeta(1-40) fibril before any filtering, symmetrization, or masking. Figure 5D of the primary citation was generated from this map by application of helical symmetry and a B factor of -600A^2, with low-pass filtering to 7.5A.
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emd_6328.jpg
emd_6328_fsc.xml