REL RCSB RCSB RCSB 2016-05-03 2016-07-13 2017-05-03 2017-05-03 Cryo-EM structure of the WRC-Rac1 complex Chen B Chou H-T Xing W Henry L Walz T Rosen MK cryoelectron microscopy, Wave Regulatory Complex, GTPase, actin nucleation Chen B Chou H-T Xing W Henry L Walz T Rosen MK Rac1 GTPase Activates the WAVE Regulatory Complex Through Two Distinct Binding Sites To Be Published Complex of WAVE regulatory complex (WRC) and Rac1 Complex of WAVE regulatory complex (WRC) and Rac1
The sample was monodisperse.
One heteropentamer of WRC binds to one Rac1 2 0.375 WAVE regulatory complex Homo sapiens Human 0.375
WRC is composed of 5 subunits: Sra1, Nap1, WAVE1, Abi2, and HSPC300.
1 heterohexamer true Spodoptera frugiperda sf9 Rac1 Homo sapiens Human
Rac1 is fused to C-terminal WAVE1.
1 true Spodoptera frugiperda sf9 singleParticle particle 0.1 7.0
10 mM HEPES, 100 mM NaCl, 1 mM MgCl2, 2 mM TCEP
glow-discharged Quantifoil holey carbon grids (400 copper mesh, R1.2/1.3)
 ETHANE 80 103 GATAN CRYOPLUNGE 3 WRC-Rac1 complex (3.5 microliter at 0.1 mg/ml) was applied to glow-discharged Quantifoil holey carbon grids (400 copper mesh, R1.2/1.3). The grids were blotted for 3 seconds and quick-frozen in liquid ethane using a Gatan CryoPlunge 3. FEI TECNAI 20 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 2 1.5 2.5 29000.0 40410.0 OTHER 88 2015-06-16 GATAN K2 SUMMIT (4k x 4k) 5 2173 38.4
There were a total of 2,173 image stacks. For 1,366 stacks, 30 frames were recorded at 200 ms per frame (total exposure time of 6 seconds). For 407 stacks, 34 frames were recorded at 300 ms per frame (total exposure time of 10.2 seconds). For 400 stacks, 51 frames were recorded at 200 ms per frame (total exposure time of 10.2 seconds).
 This holder operates at liquid nitrogen temperature.
Initial model was low-pass filtered crystal structure of the WRC complex (PDB ID 3P8C). Automatic particle picking, 2D classification, 3D classification, refinement, and subsequent reconstruction were performed using RELION.
whole micrograph
 OTHER 7.0 OTHER Relion 29784 emd_6642.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 250 250 250 0 0 0 250 250 250 310.0 310.0 310.0 90.0 90.0 90.0 X Y Z -0.03580169 0.08824085 0.00030724 0.00353338 1.24 1.24 1.24 0.0217 EMDB Reconstruction of WRC-Rac1
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 3P8C RIGID BODY FIT Chimera REAL 3SBD RIGID BODY FIT Chimera REAL