REL RCSB RCSB RCSB 2009-02-15 2009-03-09 2010-07-07 2016-03-02 cryoEM structure of Abeta(1-42) amyloid fibrils Zhang R Hu X Khant H Ludtke SJ Chiu W Schmid MF Frieden C Lee J-M Alzheimer's disease, amyloid fibrils, Abeta(1-42), neurodegenerative disease, IHRSR Zhang R Hu X Khant H Ludtke SJ Chiu W Schmid MF Frieden C Lee JM Interprotofilament interactions between Alzheimer's Abeta1-42 peptides in amyloid fibrils revealed by cryoEM. PROC.NAT.ACAD.SCI.USA 106 4653 4658 2009 19264960 doi:10.1073/pnas.0901085106 Abeta(1-42) amyloid fibril Abeta(1-42) amyloid fibril
The sample was prepared in 10mM HCl buffer for 1 month to form fibrils.
1 Abeta(1-42) amyloid fibril 0.005 0.005
The component of this amyloid fibril is a 42-residue peptide. Dry synthetic human Abeta1-42 peptides were purchased from American Peptide Company Inc.
helical false helical filament 0.9 2.0
10mM HCl, 2% DMSO
Quantifoil 200 mesh grid
 ETHANE 95 90 OTHER
Vitrification instrument: vitrobot
2 blots, each 2 seconds before plunging JEOL 2010F OTHER BRIGHT FIELD FIELD EMISSION GUN 200 2 1.8 3.4 60000.0 GATAN LIQUID NITROGEN 93 93 93 objective lens astigmatism was corrected at 400,000 times magnification JEOL 2006-12-09 GENERIC GATAN 208 18 8. Eucentric
The long straight filaments were boxed out from the raw electron micrograph using EMAN helixboxer program.
C2 OTHER 10.0 FSC 0.5 CUT-OFF IHRSR
We sorted heterogeneous dataset into homogeneous subgroups. And the deposited map is the reconstruction for one of the subgroups .
each micrograph by binnary phase flipping
 emd_5052.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 288 288 288 -144 -144 -144 288 288 288 521.27997 521.27997 521.27997 90.0 90.0 90.0 X Y Z -0.75612682 1.78369975 0.00254699 0.12236803 1.81 1.81 1.81 0.98 AUTHOR This is a cryoEM map of a segment of Abeta(1-42) amyloid fibrils.
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 2BEG A RIGID BODY FIT
PDBEntryID_givenInChain. Protocol: manually fit. manually fit 10 abeta(1-42) monomers into one strand of cryoEM map.
REAL