REL RCSB RCSB RCSB 2012-02-20 2012-04-23 2012-04-26 2014-02-12 Molecular Architecture of Chemoreceptor Array in E. coli Liu J Hu B Morado DR Jani S Manson MD Margolin W Bacterial Chemotaxis Chemoreceptor array Signaling Transduction Minicell cryo-electron tomography Liu J Hu B Morado DR Jani S Manson MD Margolin W Molecular architecture of chemoreceptor arrays revealed by cryoelectron tomography of Escherichia coli minicells. PROC.NAT.ACAD.SCI.USA 109 e1481 e1488 2012 22556268 doi:10.1073/pnas.1200781109 Molecular Architecture of Chemoreceptor Arrays Molecular Architecture of Chemoreceptor Arrays
The sample is E. coli minicell.
3 Bacterial chemoreceptor arrays false Escherichia coli Escherichia coli subtomogramAveraging particle
tryptone broth
 NEGATIVE
Bacterial cultures were mixed with 15-nm colloidal gold (used as fiducial makers in image alignment) and then deposited onto freshly glow-discharged, holey carbon grids for 1 minute. The grids were blotted with filter paper and rapidly frozen in liquid ethane, using a gravity-driven plunger apparatus.
200 mesh holey carbon grids, glow discharged.
 ETHANE 80 90 HOMEMADE PLUNGER
Grids were blotted for a few seconds before plunging into liquid ethane.
Blot for few seconds before plunging. FEI POLARA 300 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 2.0 4.0 6.0 31000.0 31000.0 OTHER Objective lens astigmatism was corrected at 200,000 times magnification 2010-12-01 GENERIC TVIPS (4k x 4k) 1024 100 LN cooled -65 65
The particles were selected manually by visual inspection. The approximate local orientation of each small patch was estimated based on its location relative to the center of the minicell, therefore providing two of the three Euler angles. The sub-volume analysis of 2-D arrays was carried out by using Dr. Hanspeter Winkler's package.
OTHER 32.0 FSC 0.5 CUT-OFF IMOD,RAPTOR,PROTOMO 12483 8 emd_5404.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 128 128 128 -64 -64 -64 128 128 128 729.6 729.6 729.6 90.0 90.0 90.0 X Y Z -10.09930325 11.679125790000001 0.0 1.0 5.7 5.7 5.7 1.6 AUTHOR This in situ structure of chemoreceptor array was determined by using cryo-electron tomography of E. coli minicell
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 1QU7 RIGID BODY FIT Chimera
Protocol: Rigid body
REAL