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_data/members.yml

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- name: Luca Gazolla
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position: Visiting Ph.D Candidate
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avatar: /images/people/Luca-Gazolla.png
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- name: Cintia Leal
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position: Visiting Ph.D Candidate
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avatar: /images/people/Cintia-Leal.png
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- name: Andrea Villani
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position: Visiting Ph.D Candidate
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avatar: /images/people/Andrea-Villani.png
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- name: Jahaciel Villaverde Nogues
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position: M.Sc Student

education/HADDOCK24/RNA-Pol-III-2024/index.md

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image:
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feature: pages/banner_education-thin.jpg
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---
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This tutorial consists of the following sections:
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* table of contents
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{:toc}
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This tutorial was last updated on 02-03-2026. <br>
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<hr>
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## Introduction
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### C82 AlphaFold model
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The C82 AlphaFold model can be accessed [here](https://alphafold.ebi.ac.uk/entry/A0A816BHH4){:target="\_blank"}.
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The C82 AlphaFold model can be accessed [here](https://alphafold.ebi.ac.uk/entry/P32349){:target="\_blank"}.
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<a class="prompt prompt-info">
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Inspect the 3D model and in particular the color-coding which indicates the model confidence.
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<details style="background-color:#DAE4E7">
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<summary style="font-weight: bold">
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<i>See the AlhpaFold model and PAE plot</i>
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<i>See the AlphaFold model and PAE plot</i>
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<br>
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</summary>
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<figure align="center">
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<details style="background-color:#DAE4E7">
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<summary style="font-weight: bold">
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<i>See the AlhpaFold model and PAE plot</i>
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<i>See the AlphaFold model and PAE plot</i>
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<br>
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</summary>
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<figure align="center">
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<details style="background-color:#DAE4E7">
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<summary style="font-weight: bold">
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<i>See the AlhpaFold-multimer PAE plot</i>
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<i>See the AlphaFold-multimer PAE plot</i>
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<br>
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</summary>
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<figure align="center">
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<details style="background-color:#DAE4E7">
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<summary style="font-weight: bold">
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<i>See the AlhpaFold model and PAE plot</i>
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<i>See the AlphaFold model and PAE plot</i>
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<br>
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</summary>
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<figure align="center">
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PowerFit is open-source and available for download from our [Github repository][link-powerfit]{:target="_blank"}.
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To facilitate its use, we have developed a [web portal][link-powerfit-web]{:target="_blank"} for it.
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The server makes use of either local resources on our cluster, using the multi-core version of the software, or GPGPU-accelerated grid resources of the
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The server makes use of either local resources on our cluster, using the multi-core version of the software, or GPU-accelerated grid resources of the
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[EGI](https://www.egi.eu){:target="_blank"} to speed up the calculations. It only requires a web browser to work and benefits from the latest
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developments in the software, based on a stable and tested workflow. Next to providing an automated workflow around
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PowerFit, the web server also summarizes and higlights the results in a single page including some additional postprocessing
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To run PowerFit, go to
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<a class="prompt prompt-info" href="https://alcazar.science.uu.nl/services/POWERFIT" target="_blank">https://alcazar.science.uu.nl/services/POWERFIT</a>
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<a class="prompt prompt-info" href="https://wenmr.science.uu.nl/powerfit" target="_blank">https://wenmr.science.uu.nl/powerfit</a>
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On this page, you will find the most relevant information about the server as well as the links to the local and grid versions of the portal's submission page.
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__Note__: The ChimeraX Fit in Map function does not move the model to the density if they are far apart. If this is the case you can first perform a more exhaustive search. Note that this might take a while since it is a large system
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<a class="prompt promt-pymol">
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fitmap #model inMap #density search 100
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<a class="prompt prompt-pymol">
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fitmap #model inMap #density search 5
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You can now optimize the fit by using the previously described instructions
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<hr>
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### Setting up the full docking run using the cryo-EM fitted and refined core and C82 domains
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We will setup a docking run to model the full complex including some information about the C31 cross-links and the missing two first wHTH domains of C34. For this we will use the PowerFit/Chimera, HADDOCK-refined structure (Core+C82+C34wHTH3) which we have generated as starting point. We will fix those domains in their original positions for the initial rigid-body docking stage and dock the two missing C34 wHTH domains including fragments of C31 for which we have cross-links.
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We will setup a docking run to model the full complex including some information about the C31 cross-links and the missing two first wHTH domains of C34. For this we will use the PowerFit/ChimeraX, HADDOCK-refined structure (Core+C82+C34wHTH3) which we have generated as starting point. We will fix those domains in their original positions for the initial rigid-body docking stage and dock the two missing C34 wHTH domains including fragments of C31 for which we have cross-links.
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Connect to the [HADDOCK2.4 interface](https://wenmr.science.uu.nl/haddock2.4/submit/1){:target="_blank"} of the HADDOCK web server.
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In the ChimeraX command window type:
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<a class="prompt prompt-pymol">
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color by chain<br>
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color bychain<br>
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hide atoms<br>
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show cartoon<br>
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distance /B:50@CB /F:91@CB<br>
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In order to perform the fit, we will use the Command Line more:
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<a class="prompt prompt-pymol">
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fitmap #model inMap #density search 100<br>
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fitmap #model inMap #density search 5<br>
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When the fit completes, a window will appear showing the fit results in terms of correlation coefficients.
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[link-haddock-register]: https://wenmr.science.uu.nl/auth/register/"HADDOCK web server registration"
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[link-molprobity]: http://molprobity.biochem.duke.edu "MolProbity"
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[link-powerfit]: https://github.com/haddocking/powerfit "PowerFit"
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[link-powerfit-web]: https://alcazar.science.uu.nl/services/POWERFIT/ "PowerFit web server"
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[link-powerfit-register]: https://wenmr.science.uu.nl/auth/register "PowerFit registration"
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[link-powerfit-submit]: https://alcazar.science.uu.nl/cgi/services/POWERFIT/powerfit/submit "PowerFit submission"
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[link-powerfit-help]: https://alcazar.science.uu.nl/cgi/services/POWERFIT/powerfit/help "PowerFit submission"
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[link-powerfit-web]: https://wenmr.science.uu.nl/powerfit "PowerFit web server"
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[link-powerfit-submit]: https://wenmr.science.uu.nl/powerfit "PowerFit submission"
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education/NMRMolmod/index.md

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As final step save the molecule as a new PDB file which we will call: *e2a_1F3G.pdb*<br>
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For this in the PyMOL menu on top select:
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<a class="prompt prompt-info">File -> Save molecule...</a>
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<a class="prompt prompt-info">File -> Export structure -> Export molecule...</a>
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<a class="prompt prompt-info">Select 1F3G and click on the save button</a>
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<a class="prompt prompt-info">Name your file *e2a_1F3G.pdb*, make sure to select *PDB* as format and note the location of the saved file</a>
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<a class="prompt prompt-pymol">
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show spheres, histidines<br>
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show sticks, histidines<br>
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util.cnc<br>
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* high quality model: l-RMSD<1Å
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Q19: What is based on this CAPRI criterion the quality of the best model?
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Q19: Based on this CAPRI criterion, what is the quality of the best model?
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**Note:** On some machines the pymol rms_cur command can fail due to a bug in the PyMOL software. In this case you can use the following command instead:
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</a>
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[Wang *et al*, EMBO J (2000)](http://onlinelibrary.wiley.com/doi/10.1093/emboj/19.21.5635/abstract)
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[Wang *et al*, EMBO J (2000)](https://pmc.ncbi.nlm.nih.gov/articles/PMC305802/)
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## Submitting your report
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Your report should be submitted in the form of a PDF file at the latest on Friday April 8rd before midnight.
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Submission should be done via Blackboard (assignment in Docking Practical under Course Content).
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Your report should be submitted in the form of a PDF file at the latest on Friday April 3rd before midnight.
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Submission should be done via Brightspace (assignment in Docking Practical under Course Content).
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[link-pymol]: http://www.pymol.org/ "PyMOL"

education/Others/index.md

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* [**PowerFit web server tutorial**](/education/Others/powerfit-webserver/): A small introduction into
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PowerFit to automatically place a high-resolution atomic structure in a
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lower-resolution cryo-electron microscopy density map making use of our [web portal](https://alcazar.science.uu.nl/cgi/services/POWERFIT/powerfit)
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lower-resolution cryo-electron microscopy density map making use of our [web portal](https://wenmr.science.uu.nl/powerfit)
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(does not require Linux).
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* [**DisVis web server tutorial**](/education/Others/disvis-webserver/): A small introduction into

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