REL RCSB RCSB RCSB 2013-05-30 2013-06-26 2013-08-14 2013-09-18 Electron Microscopy of the Aquaporin-0/Calmodulin Complex Reichow SL Clemens DM Freites JA Nemeth-Cahalan KL Heyden M Tobias DJ Hall JE Gonen T aquaporin, calmodulin, calcium regulation, water channel, membrane protein complex, electron microscopy Reichow SL Clemens DM Freites JA Nemeth-Cahalan KL Heyden M Tobias DJ Hall JE Gonen T Allosteric mechanism of water-channel gating by Ca2+-calmodulin. NAT.STRUCT.MOL.BIOL. 20 1085 1092 2013 23893133 doi:10.1038/nsmb.2630 3j41 FULLOVERLAP Aquaporin-0 bound to Calmodulin Aquaporin-0 bound to Calmodulin
Sample was prepared for electron microscopy with negative stain
One tetramer of Aquaporin-0 bound to 2 molecules of Calmodulin 2 0.13 0.13 Size-exclusion Chromatography and SDS-PAGE Aquaporin-0 Ovis aries Sheep eye lens fiber cell plasma membrane 0.025 0.025
Crosslinked to Calmodulin using EDC/NHS
4 tetramer false Q6J819 IPR000425 Calmodulin Homo sapiens Human cytoplasmic 0.017 0.017
Calmodulin crosslinked to Aquaporin-0
2 monomer true Escherichia coli BL21 pET P62158 singleParticle particle 0.02 7.4
25mM HEPES, 5mM CaCl2, 0.3% decylmaltoside
 NEGATIVE
0.75% uranyl formate
400 mesh carbon coated grid (Ted Pella)
 NONE OTHER FEI TECNAI 12 FLOOD BEAM BRIGHT FIELD LAB6 120 2 1.0 2.0 52000.0 52000.0 OTHER Objective lens astigmatism was corrected at 100,000 times magnification 0 2010-02-25 KODAK SO-163 FILM NIKON SUPER COOLSCAN 9000 6.35 200 15 16. 0 50
Particles were selected from a tilted pair dataset at 0 and 50 degree tilt using SPIDER. An initial reconstruction was generated using random conical tilt methods in SPIDER and refined in FREALIGN
CTF-TILT, each micrograph
 OTHER 25.0 FSC 0.5 CUT-OFF SPIDER, FREALIGN
Final Map with C2 Symmetry and Filtered to 25 Angstrom
11720 emd_5679.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 66 66 66 -33 -33 -33 66 66 66 262.68 262.68 262.68 90.0 90.0 90.0 X Y Z -3.1143434 8.37446785 -0.00000001 1.0 3.9799998 3.9799998 3.9799998 4.96 AUTHOR 3D Reconstruction of the Aquaporin-0/Calmodulin Complex
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 2B6P A RIGID BODY FIT Chimera cross-correlation REAL
emd_5679.tif