<div dir="ltr">Hi all!!<div><br></div><div><b>Hi Piotr :),</b></div><div><br></div><div>Thanks for your Relion screenshots (very useful because idk most of the commands) and suggestions, I'll try to input them on my 2D classification and see what happens! (Fingers crossed).</div><div><br></div><div>Maybe I'll say shit... but as far as I know I don't have Topaz implemented so I'll try to figure it out. But I think that suggestions it's cool not only for me but also for other mates!!!</div><div><br></div><div>I'm really grateful for your help!!!</div><div><br></div><div><br></div><div><b>Hi again Jacopo :D,</b></div><div><br></div><div>I think I have some orientation plus heterogenity plus idk what, because I have the crystal structures of most of the domains of my complex but we can't fit anything inside :/. We were hoping better results with that huge batch from the Titan but we're in the same point as we were with the Talos batches.</div><div><br></div><div>We performed 5 2D round on Cryosparc.</div><div><br></div><div>I let here some screenshots about Relion autopick:</div><div><img src="cid:ii_knstcn4n3" alt="Screenshot 2021-04-22 at 13.19.01.png" width="563" height="255"><br></div><div><img src="cid:ii_knstcr0s4" alt="Screenshot 2021-04-22 at 13.19.12.png" width="563" height="264"><br></div><div><br></div><div>And 2D classification:</div><div><img src="cid:ii_knsteago5" alt="Screenshot 2021-04-22 at 13.41.25.png" width="563" height="292"><br></div><div><img src="cid:ii_knsteewh6" alt="Screenshot 2021-04-22 at 13.41.17.png" width="563" height="291"><br></div><div><img src="cid:ii_knstehkt7" alt="Screenshot 2021-04-22 at 13.41.33.png" width="563" height="289"><br></div><div><br></div><div>Thanks a million!!!</div><div><br></div><div><br></div><div><b>Hi David :),</b></div><div><br></div><div>Thanks for the CTF suggestion, I'll definitely try that!</div><div>For the TOpaz I don't think I have it. Also I wanted to export from Cryosparc to Relion either my 2D either my preliminar 3D, but when I tried I just got a failed job or a 0 picking in Relion, I guess I did something wrong, but I don't know what.</div><div><br></div><div>Thanks a bunch!</div><div><br></div><div><br></div><div><br></div><div><b>Hi Guillaume :3,</b></div><div><br></div><div>People that mention that just said, Relion works better with preferential orientation issues, but since I have no clue about the topic I'm no-one to discuss, and well.. try both in parallel is not a bad idea and it will force me to learn more (but it's being hard!!!).</div><div><br></div><div>I did a 3D refinement in cryosparc</div><img src="cid:ii_knstop4u8" alt="Screenshot 2021-04-22 at 13.49.02.png" width="457" height="231"><br><div><img src="cid:ii_knstowp79" alt="Screenshot 2021-04-22 at 13.49.10.png" width="457" height="274"><br></div><div><img src="cid:ii_knstozgu10" alt="Screenshot 2021-04-22 at 13.49.18.png" width="457" height="378"><br></div><div>But when I look at the chimera model it doesn look ok, I have... slices (it's the best description I can make). That's why they said I have preferential orientation I guess.</div><div><br></div><div>For the 3D classes I tried 3 and 4, and it looks ...it can work but then I move to the refinement and no.</div><div><br></div><div>I need to figure out how to install topaz and also get green light to do it. But I see everyone is really advision Topaz, so I'll definitely try to get it.</div><div><br></div><div>Oh no, In cryosparc I did a blob picking and then with the first 2D classes set I tried to improve my picking using it as a template.</div><div><br></div><div>OMG so many good suggestions, I'm really grateful you spent time to help me. THANKS!!!!</div><div><br></div><div><br></div><div><b>Hola Oscar :D</b>,</div><div><br></div><div>I never heard about that methods before, I'll try to get more information about them. Thanks!!!</div><div><br></div><div><br></div><div><br></div><div>Best,</div><div>Lucia</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">El jue, 22 abr 2021 a las 13:29, Carlos Oscar Sorzano (<<a href="mailto:coss@cnb.csic.es">coss@cnb.csic.es</a>>) escribió:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>I agree that it seems you have enough views and maybe the problem
is in the generation of the initial volume. You may try with
methods that work with class representatives, rather than raw
images, in that way you get away from the preferred views. RANSAC
and reconstruct significant from Xmipp are ones of these methods.
You can access them through Scipion.</p>
<p>Kind regards, Carlos Oscar<br>
</p>
<div>El 22/04/2021 a las 13:14, Marino
Jacopo (PSI) escribió:<br>
</div>
<blockquote type="cite">
<div>
<p class="MsoNormal"><span lang="EN-US">To me it does not look like you have a severe
orientation bias (if you have it at all), and you have
plenty of particles !
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">It might be some views are hidden within other
classes. How many rounds of 2D-classes and selection you did
already ?<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">For ab-initio, you might play around with
parameters (2 classes, zero similarity, higher number of
final iterations, etc.) look on the cryosparc forum for
similar discussions. Sometimes you need to play with the
ab-initio till you get a volume that makes sense, then take
the particles that come with it and go to refinement.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">If you want help with the parameters for
Relion, you need to post a screenshot of your GUI with the
parameters. Relion works well too !
</span><span lang="EN-US">😊</span><span lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="en-CH"><u></u> <u></u></span></p>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US"> Lucia <a href="mailto:luciatorressanchez3@gmail.com" target="_blank"><luciatorressanchez3@gmail.com></a>
<br>
<b>Sent:</b> Thursday, 22 April 2021 12:57<br>
<b>To:</b> Marino Jacopo (PSI)
<a href="mailto:jacopo.marino@psi.ch" target="_blank"><jacopo.marino@psi.ch></a><br>
<b>Cc:</b> <a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a><br>
<b>Subject:</b> Re: [3dem] Relion issue Autopick - 2D
classification<u></u><u></u></span></p>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">Hi Jacopo,<u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">I try but relion is my nightmare. I
feel so useless with it.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">In cryosparc I get nice 2D classes (or
that what people say because of course I'm far far from
have basic knowledge):<u></u><u></u></p>
</div>
<p class="MsoNormal"><img style="width: 5.8697in; height: 3.1875in;" id="gmail-m_-3032782245477726745Picture_x0020_1" src="cid:178f95b9a9a4cff311" width="564" height="306"><u></u><u></u></p>
<div>
<p class="MsoNormal">But then in the 3D, anything makes
sense. The "best" AB-initio for the moment looks like...<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><img style="width: 5.8645in; height: 3.5625in;" id="gmail-m_-3032782245477726745Picture_x0020_2" src="cid:178f95b9a9a5b16b22" width="563" height="342"><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">So I moved to relion and I set
different combinations of parameters, but when I try to do
the 2D classes (independently of my parameters in the
autopick) I get that:<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><img style="width: 5.8645in; height: 4.3333in;" id="gmail-m_-3032782245477726745Picture_x0020_3" src="cid:178f95b9a9a692e333" width="563" height="416"><u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">It's obvious even for me that I'm doing
something AWFULLY wrong, but I swear I tried and I don't
understand what I'm doing wrong neither how to overcome
it.<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks!!!!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">Lucia<u></u><u></u></p>
</div>
</div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">El jue, 22 abr 2021 a las 12:43, Marino
Jacopo (PSI) (<<a href="mailto:jacopo.marino@psi.ch" target="_blank">jacopo.marino@psi.ch</a>>)
escribió:<u></u><u></u></p>
</div>
<blockquote style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(204,204,204);padding:0cm 0cm 0cm 6pt;margin-left:4.8pt;margin-right:0cm">
<div>
<div>
<p class="MsoNormal"><span lang="EN-US">Hi Lucia,</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Don’t be desperate. You are in the
initial phase of learning how to use Relion and
cryosparc, so frustration might be normal.</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Preferential orientation is an
interesting topic and it might not impede that you
reach high resolution density maps.
</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">The suggestion of using Relion to
circumvent orientation bias is funny. In Relion you
might need to play around with the parameters to
pick particles, better you do it with a small set of
micrographs.</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">You can also continue with cryosparc,
maybe change the picking parameters to see whether
you really don’t have much other 2D classes.</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Go to ab-initio with your best
2D-classes. What do you get there ?</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"> </span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Good luck</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Jacopo</span><span lang="en-CH"><u></u><u></u></span></p>
<p class="MsoNormal"><span lang="en-CH"> <u></u><u></u></span></p>
<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US">From:</span></b><span lang="EN-US">
3dem <<a href="mailto:3dem-bounces@ncmir.ucsd.edu" target="_blank">3dem-bounces@ncmir.ucsd.edu</a>>
<b>On Behalf Of </b>Lucia<br>
<b>Sent:</b> Thursday, 22 April 2021 12:17<br>
<b>To:</b> <a href="mailto:3dem@ncmir.ucsd.edu" target="_blank">3dem@ncmir.ucsd.edu</a><br>
<b>Subject:</b> [3dem] Relion issue Autopick - 2D
classification</span><span lang="en-CH"><u></u><u></u></span></p>
</div>
<p class="MsoNormal"><span lang="en-CH"> <u></u><u></u></span></p>
<div>
<p class="MsoNormal"><span lang="en-CH">Hi all,<br>
<br>
Sorry for bother and thanks for your
patience/help. I’m trying to use Relion to
Autopick (Laplacian) a set of elongated particles
that are around 150A long. I managed to get a nice
set of 2D classes in Cryosparc but, since I have
preferential orientation, people recommend me to
use Relion to redo my dataset analysis.<u></u><u></u></span></p>
<div>
<p class="MsoNormal"><span lang="en-CH"><br>
But... I'm really stuck, I have no experience
with Relion and I don't manage to get any good
autopicking that lead me to a 2D classification
(even a preliminar one to re do the picking
after), I just get black images or nonsense in
the 2D classification, even when I check the
images after the autopicking and they don't look
bad.<br>
<br>
Honestly idk what to put here about the
parameters that I'm using because I tried a
bunch but blindly (since I have no idea neither
experience).<br>
<br>
I was hoping someone could give me some
suggestions that help me to overcome that point
because I'm desperate.<br>
<br>
Thanks!<br>
Lucia<u></u><u></u></span></p>
</div>
</div>
</div>
</div>
</blockquote>
</div>
</div>
<br>
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