REL PDBe PDBe PDBe 2014-04-08 2014-04-23 2015-05-06 2015-07-22 The Cryo-Electron Microscopy Structure of the CorA channel from Methanocaldococcus jannaschii at 21.6 Angstrom in low magnesium. Cleverley RM Kean J Shintre CA Baldock C Derrick JP Ford RC Prince SM membrane protein, magnesium ion channel Cleverley RM Kean J Shintre CA Baldock C Derrick JP Ford RC Prince SM The Cryo-EM Structure of the CorA channel from Methanocaldococcus jannaschii in low magnesium conditions. BIOCHIM.BIOPHYS.ACTA 1848 2206 2215 2015 26051127 doi:10.1016/j.bbamem.2015.06.002 4cy4 FULLOVERLAP CorA channel from Methanocaldococcus jannaschii CorA channel from Methanocaldococcus jannaschii
Single peak in DDM detergent in size exclusion, analysed by PFO-PAGE electrophoresis
Pentamer 1 0.2 Magnesium transport protein CorA Methanocaldococcus jannaschii ATCC 43067 Plasma membrane 0.037
Recombinantly over-expressed protein, solubilized from membrane fraction. Purified by affinity (His-tag), size exclusion chromatography. Proteolytic tag cleaveage.
5 Pentamer true Escherichia coli BL21(DE3) STAR pOPINF Q58439 IPR004488 singleParticle particle 1 8.0
20mM Tris/HCl,200mM NaCl,0.04% DodecylMaltoside
Quantifoil R 1.3/2 holey carbon-coated EM grids
 ETHANE 90 FEI VITROBOT MARK I Blotted twice with Whatman No.1 filter paper for 1s each time FEI TECNAI F20 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 200 3.3 4.8 SIDE ENTRY, EUCENTRIC 104
Low dose mode
2009-06-05 GATAN ULTRASCAN 4000 (4k x 4k) 28
4k by 4k pixel each pixel maps to 3.5 by 3.5 Angstroms
Model based particle picking based an ab-initio model generated from a Small Angle Scattering
With reference to X-ray scattering curve
 C1 OTHER 21.6 OTHER EMAN
Initial model derived from SAXS envelope
44064 490 emd_2626.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 49 49 49 -24 -24 -24 49 49 49 171.5 171.5 171.5 90.0 90.0 90.0 Z X Y -0.87796277 5.19715738 0.09105561 0.45542145 3.5 3.5 3.5 0.125 AUTHOR Single particle cryo-electron microscopy map of the CorA channel from Methanocaldococcus jannaschii
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 4ev6 A B C D E RIGID BODY FIT UCSF Chimera
The coordinates of the MjCorA pentamer from PDB entry 4ev6 were positioned manually within the envelope. The fit was adjusted automatically by maximizing the correlation of the EM map with a map calculated from 4ev6 at a resolution of 21.6 Angstroms.
Maximum correlation of map calculated from coordinates REAL
emd_2626.jpg
emd_2626_fsc.xml