REL PDBe PDBe PDBe 2015-06-23 2015-07-01 2015-08-12 2015-09-09 Cryo-EM structure of the human gamma-secretase complex at 3.4 angstrom resolution. Bai XC Yan CY Yang GH Lu PL Ma D Sun LF Zhou R Scheres SHW Shi YG cryo-EM, human gamma-secretase, membrane protein, single particle Bai XC Yan CY Yang GH Lu PL Ma D Sun LF Zhou R Scheres SHW Shi YG An atomic structure of human gamma-secretase NATURE 525 212 217 2015 26280335 doi:10.1038/NATURE14892 5a63 FULLOVERLAP human gamma-secretase human gamma-secretase heterotetramer 4 0.17 0.17 gamma-secretase Homo sapiens Human HEK 293F cells membrane 0.17 0.17 1 Heterotetramer true Homo sapiens HEK 293F cells pMLink singleParticle particle 6 7.4
25 mM HEPES, pH 7.4, 150 mM NaCl and amphipol A8-35
 NEGATIVE
cryo-EM
300 mesh Au 1.2/1.3 Quantifoil grid, glow discharged for 1 minute
 ETHANE 100 85 FEI VITROBOT MARK IV Blot for 4 seconds before plunging FEI TITAN KRIOS FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.7 0.7 3.2 81000.0 35714.0 FEI TITAN KRIOS AUTOGRID HOLDER 80 90 85 Gatan Quantum 0.0 20.0 2014-10-02 GATAN K2 (4k x 4k) 5 2925 38
20 frames were recorded by the direct electron detector
Use a newly developed statistical movie processing and particle polishing approach to compensate for beam-induced movement and reduce the effect of radiation-damage.
Each particle
 C1 3.4 OTHER CTFFIND3, RELION 159549 emd_3061.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 180 180 180 0 0 0 180 180 180 252.0 252.0 252.0 90.0 90.0 90.0 X Y Z -0.2716414 0.44705674 0.0000526 0.01502737 1.4 1.4 1.4 0.08 AUTHOR 3D cryo-EM reconstruction of the human gamma-secretase complex at 3.4 angstrom resolution.
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