REL RCSB RCSB RCSB 2013-09-27 2013-10-23 2014-04-23 2014-05-14 Structural mechanism of the dynein powerstroke Lin J Okada K Raytchev M Smith MC Nicastro D dynein movement, flagellar motility, axoneme Lin J Okada K Raytchev M Smith MC Nicastro D Structural mechanism of the dynein power stroke. Nat. Cell Biol. 16 479 485 2014 24727830 doi:10.1038/ncb2939 3j67 FULLOVERLAP Cryo-electron tomography and subtomographic average (1100 axonemal repeats) of inactive Strongylocentrotus purpuratus (sea urchin) sperm flagella. Cryo-electron tomography and subtomographic average (1100 axonemal repeats) of inactive Strongylocentrotus purpuratus (sea urchin) sperm flagella.
The flagellar motility was completely inhibited by erythro-9-[3-(2-hydroxynonyl)]-adenine before the cryo sample preparation.
1 dynein
Erythro-9-[3-(2-hydroxynonyl)]-adenine completely inhibited sperm flagellar motility, and kept the axonemal dyneins in post-powerstroke states.
false Strongylocentrotus purpuratus sea urchin sperm flagella subtomogramAveraging tissue 8.0
360 mM NaCl, 50 mM MgCl2, 10 mM CaCl2, 10 mM KCl, 30 mM HEPES, pH 8.0, 2 mM erythro-9-[3-(2-hydroxynonyl)]-adenine
Quantifoil holey carbon grids Cu 200 mesh R2/2
 ETHANE 100 HOMEMADE PLUNGER Blot for 1.5-2.5 seconds before plunging. FEI TECNAI F30 FLOOD BEAM BRIGHT FIELD FIELD EMISSION GUN 300 6.0 8.0 13500.0 GATAN LIQUID NITROGEN 80 GATAN postcolumn filter GIF 0.0 20.0 2012-04-28 GENERIC GATAN (2k x 2k) 100 Liquid nitrogen cooled -65 65 OTHER 34.0 FSC 0.5 CUT-OFF IMOD, PEET
Final maps were calculated by averaging 1100 particles from 9 tomograms. 1100 axonemal repeats (96 nm long) from 9 tomograms (reconstructed using fiducial alignment and weighted backprojection, IMOD software, Kremer et al. 1996) were aligned and averaged using the PEET software (bio3d.colorado.edu, Nicastro et al. 2006).
1100 emd_5757.map.gz 1 IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) 50 36 50 -32 -73 -76 36 50 50 492.8 354.816 492.8 90.0 90.0 90.0 X Y Z 98.742553709999996 152.18778992 122.468040470000005 7.22748041 9.856 9.856 9.856 126.299999999999997 AUTHOR Reconstruction of axonemal dyneins in post-powerstroke state. In the erythro-9-[3-(2-hydroxynonyl)]-adenine inhibited sea urchin sperm flagella, the outer arm dyenins show post-powerstroke conformations.
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