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Ab initio model datasets » History » Version 1

Sargis Dallakyan, 04/07/2015 08:46 PM

1 1 Sargis Dallakyan
h1. Ab initio model datasets of 50S ribosomal subunit
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h2. Information 
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These datasets were used to support various _Ab initio_ reconstruction procedures as described in ("Voss _et al._ 2010":http://www.ncbi.nlm.nih.gov/pubmed/20018246).
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The experiments included are:  YYmonDDa etc., where YY refers to the year, mon to the month and DD to the day of data acquisition.  a, b, c, etc. are subsequent experiments on that day.
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Original images may be viewed using the "Leginon image viewer":http://emportal.nysbc.org/myamiweb/imageviewer.php?expId=6592 and downloaded one-by-one from the Leginon viewer or as an entire set using the [[Dbemwiz|dbemwiz.jar]] tool and selecting the experiment, named as YYmonDDa.
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Summary information may be viewed using the Leginon summary pages and processed data may be examined using the [[appion:|Appion processing pipeline]].  Images and metadata may be downloaded from these websites or using the links below.
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h2. List of available datasets:
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table{border:1px solid black}.
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{background:#ddd}. |Session Name|Leginon Description|
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| "09apr14b":http://emportal.nysbc.org/myamiweb/imageviewer.php?expId=6592 | 50S Ribosome subunit, vitreous ice, 100k particles  |
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| "09mar04b":http://emportal.nysbc.org/myamiweb/imageviewer.php?expId=6498 | 50S Ribosome subunit, vitreous ice, Pt Coated C_Flats |
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| "09feb18c":http://emportal.nysbc.org/myamiweb/imageviewer.php?expId=6453 | 50S Ribosome subunit, tomography  |
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| "09feb12b":http://emportal.nysbc.org/myamiweb/imageviewer.php?expId=6433 | 50S Ribosomesubunit, RCT data  |
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h2. Download Raw Stacks
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bq. *Note:* all stacks have been CTF corrected using a Weiner filter with ACE2, a variation of the ACE1 algorithm described in "Mallick _el al._, 2005":http://www.ncbi.nlm.nih.gov/pubmed/15935913
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table{border:1px solid black}.
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{background:#ddd}. |Name|IMAGIC .hed file|IMAGIC .img file|
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|Projection-matching refinement stack|"start.hed":http://emg.nysbc.org/experiment/data/stacks/sub1485/start.hed|"start.img":http://emg.nysbc.org/experiment/data/stacks/sub1485/start.img|
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|Common lines stack|"start.hed":http://emg.nysbc.org/experiment/data/stacks/stack4/start.hed|"start.img":http://emg.nysbc.org/experiment/data/stacks/stack4/start.img|
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|Untilted random conical tilt (RCT) stack|"start.hed":http://emg.nysbc.org/experiment/data/stacks/notstack3/start.hed|"start.img":http://emg.nysbc.org/experiment/data/stacks/notstack3/start.img|
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|Tilted random conical tilt (RCT) stack|"start.hed":http://emg.nysbc.org/experiment/data/stacks/tiltstack4/start.hed|"start.img":http://emg.nysbc.org/experiment/data/stacks/tiltstack4/start.img|
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|Synthetic 50S projections stack|"ctfstack_snr0.05.hed":http://emg.nysbc.org/experiment/data/stacks/syntheticData/dataset6/ctfstack_snr0.05.hed|"ctfstack_snr0.05.img":http://emg.nysbc.org/experiment/data/stacks/syntheticData/dataset6/ctfstack_snr0.05.img|
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h2. Download Tomography tilt series stack and tilts
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The tilt stack file is a 32-bit real mrc file without extended header.  Combined with the information in the tilt angle (.rawtilt) file, it can be used in most tomography packages.
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table{border:1px solid black}.
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{background:#ddd}. |Name|rawtilt text file|tiltstack mrc file|
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|Tilt series 6|"09feb18c_006.rawtlt":http://emg.nysbc.org/experiment/data/stacks/tomotiltseries6/09feb18c_006.rawtlt|"09feb18c_006.st":http://emg.nysbc.org/experiment/data/stacks/tomotiltseries6/09feb18c_006.st|
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h2. Download initial models and final reconstructions 
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bq. *Note:* Refinement was done using the EMAN1 refine program for 12 iterations. Final reconstruction are the raw volume from EMAN, no amplitude correction has been performed.
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table{border:1px solid black}.
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{background:#ddd}. |Name|Initial model|Final reconstruction|
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|\3{text-align:center}. _Ab initio_ models |
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| PDB structure | "download model":http://emg.nysbc.org/experiment/data/models/accepted/density57_09apr27q54/density057-1_55apix-20_0res-200box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/pdbrecon12/threed.12a.mrc |
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| EMDB structure | "download model":http://emg.nysbc.org/experiment/data/models/accepted/density61_09may06n36/density061-1_55apix-7_5res-200box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/emdbrecon10/threed.12a.mrc |
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| Angular reconstitution | "download model":http://emg.nysbc.org/experiment/data/models/accepted/file_09jul21k04/filt.mrc-1_95apix-15_0res-160box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/clrecon12/threed.12a.mrc |
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| Cross-common lines (improved class averages) | "download model":http://emg.nysbc.org/experiment/data/models/accepted/file_09aug04n04/filt.mrc-1_95apix-30_0res-140box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/emancl_goodavgs/threed.12a.mrc |
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| Random conical tilt (RCT) | "download model":http://emg.nysbc.org/experiment/data/models/accepted/09may06o12/rct.mrc-1_55apix-39_0res-216box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/rctrecon10/threed.12a.mrc |
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| Sub-tomogram averaging | "download model":http://emg.nysbc.org/experiment/data/models/accepted/09may06n58/tomo.mrc-6_18apix-30_0res-64box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/tomorecon7/threed.12a.mrc |
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|\3{text-align:center}. Poor models |
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| Hemisphere | "download model":http://emg.nysbc.org/experiment/data/models/accepted/09jul29l35/hemisphere-3_1apix-30_0res-128box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/hemirecon16/threed.12a.mrc |
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| Symmetric Gaussian sphere | "download model":http://emg.nysbc.org/experiment/data/models/accepted/09jul29l37/gauss_sphere.mrc-3_1apix-30_0res-128box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/ssrecon14/threed.12a.mrc |
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| Asymmetric Gaussian sphere | "download model":http://emg.nysbc.org/experiment/data/models/accepted/09jul29l36/gauss_sphere_asymm.mrc-3_1apix-30_0res-128box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/asrecon15/threed.12a.mrc |
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| Angular reconstitution (poor class averages) | "download model":http://emg.nysbc.org/experiment/data/models/accepted/file_09aug05v25/filt.mrc-3_1apix-30_0res-100box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/recon20/threed.12a.mrc |
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| Cross-common lines (poor class averages) | "download model":http://emg.nysbc.org/experiment/data/models/accepted/eman_startAny/threed-1_95apix-60_0res-160box.mrc | "download density":http://emg.nysbc.org/experiment/data/recon/emanclrecon18/threed.12a.mrc |
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h2. Reference
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Voss, Lyumkis, Cheng, _et al._ (2010)
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"_A toolbox for ab initio 3-D reconstructions in single-particle electron microscopy._":http://www.ncbi.nlm.nih.gov/pubmed/20018246
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J Struct Biol. v169(3): pp. 389-98.