User:Shai Biran/Practice Proteopedia tutorial shai5

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<scene name='69/693565/Sticks-gfp/1'>Green Scene Link</scene>
<scene name='69/693565/Sticks-gfp/1'>Green Scene Link</scene>
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*First, let's clean things a bit. Change the heading in your page (where it says 'your heading here'). Feel free to choose any new heading you want.
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Delete the two rows starting with 'This is a default text...'
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*Now let's change the displayed 3D structure into the structure of GFP. In the row starting with StructureSection load change 1stp to GFP's pdb code. Hint - if you're not sure which pdb code to use, look at the GFP test page. Change the caption as well from caption='Caption for this structure’ to caption='GFP (PDB entry [[1ema]])'.
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use the 'show preview' button to check what changed in your page.
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----
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Now that we have our 3D model on the page, let’s create a green scene link that shows 1ema as it looks in the the left part of the 2D image on the GFP Sample page where we got our text. (go back to that page to see what the picture looks like [[User:Shai Biran/GFP test page]])
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To create a green scene link, we will need to use the 'Proteopedia Scene Authoring Tools'.
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*After clicking '''edit this page''', scroll down to the bold text that says “Scene authoring tools [show]” next to a colorful molecule. Click on “show” to expand the Scene Authoring Tools.
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[[Image:SAT.png]]
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*Click on the tab “load molecule” in the Scene Authoring Tools.
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*Load the PDB file 1ema by entering the PDB code “1ema” in the input box next to the words “By PDB code:” and then pressing the adjacent button marked “load”
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*Now we have 1ema loaded into the Scene Authoring Tools’ Jmol applet. The idea behind the Scene Authoring Tools (SAT) is to create the exact scene that you would like to have load when your green link is clicked. This is generally done by first loading a PDB file into the SAT’s applet, then using the “selections”, “representations”, “colors”, and “labels” tabs to manipulate the 3D model into the desired state, finally saving the green scene link using the “save scene” tab.
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*Our structure is currently displayed in cartoon representation. The first step in recreating the picture in the Molecule of the Month is to display the molecule in backbone representation.
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*Click on the “selections” tab.
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[[Image:Selections.png]]
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*In the “all or nothing and halos” section, click on the “select all” button.
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[[Image:GFP_Halos_off.png]]
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*Nothing changed because “selection halos” were not on. Turn them on by marking the checkbox next to the word “selection halos”.
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[[Image:GFP_Halos_On.png]]
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Selection halos serve to show you what is currently selected. They will not be displayed when the green scene link you eventually create is clicked.
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'''Your page should look like this:''' ↓↓↓↓↓↓↓↓↓↓↓↓
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Now that we have everything selected, click on the “representations” tab of the SAT.
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[[Image:Representations.png]]
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==Your Heading Here (maybe something like 'Structure')==
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Mark the checkbox next to “backbone” in the section titled “set selection representation”.
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<StructureSection load='1ema' size='340' side='right' caption='Caption for this structure' scene=''>
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Click on the “set representation” button.
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This is a default text for your page '''Sandbox'''. Click above on '''edit this page''' to modify. Be careful with the &lt; and &gt; signs.
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Notice the representation of the 3D model has changed from cartoon to backbone. To help see this better, turn off the selection halos by unmarking the checkbox next to “selection halos”.
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You may include any references to papers as in: the use of JSmol in Proteopedia <ref>DOI 10.1002/ijch.201300024</ref> or to the article describing Jmol <ref>PMID:21638687</ref> to the rescue.
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[[Image:Backbones.png]]
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== Introduction ==
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Now we want to select the segment of the protein that runs through the barrel and color it green.
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Green fluorescent protein ('''GFP'''), originally isolated from the jellyfish Aequorea victoria (PDB entry [[1ema]]), fluorsceses green (509nm) when exposed to blue light (395nm and 475nm). It is one of the most important proteins used in biological research because it can be used to tag otherwise invisible gene products of interest and thus observe their existence, location and movement.
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To make a selection, click on the “selections” tab.
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We will select the segment that runs through the barrel by its residue numbers. To do this we need to know the first and the last residue numbers that make up this segment.
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Notice that when you hover with your mouse over an atom in the Jmol applet, information about that atom is displayed, including the residue that atom is part of, and the residue number. Use this “hover” feature to find the residue numbers for the beginning and the end of the segment we are interested in.
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== Exploring the Structure ==
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[[Image:Hover_over_atom.png]]
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GFP is a beta barrel protein with 11 beta sheets. It is a 26.9kDa protein made up of 238 amino acids. The
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<scene name='Sandbox_4/Green_fp/1'>chromophore</scene>, responsible for the fluorescent properties of the protein, is buried inside the beta barrel as part of the central alpha helix passing through the barrel. The chromophore forms via spontaneous cyclization and oxidation of three residues in the central alpha helix: -Thr65 (or Ser65)-Tyr66-Gly67. This cyclization and oxidation creates the chromophore's five-membered ring via a new bond between the threonine and the glycine residues.<ref>PMID:8703075</ref>
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This is a sample scene created with SAT to <scene name="/12/3456/Sample/1">color</scene> by Group, and another to make <scene name="/12/3456/Sample/2">a transparent representation</scene> of the protein. You can make your own scenes on SAT starting from scratch or loading and editing one of these sample scenes.
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</StructureSection>
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Enter the starting and ending residue numbers, separated by a hyphen, into the input box under the text “limit to residue numbers:”.
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Before making our new selection, let’s turn on selection halos so we see the change in the selection take place. Mark the checkbox next to “selection halos”. Notice that everything is selected.
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Now go ahead and make the new selection by clicking “replace selection”. This will replace the old selection (everything) with our new selection (limited to a stretch of residues).
== Next ==
== Next ==

Current revision

Adding a GREEN SCENE LINK

  • First, let's clean things a bit. Change the heading in your page (where it says 'your heading here'). Feel free to choose any new heading you want.

Delete the two rows starting with 'This is a default text...'

  • Now let's change the displayed 3D structure into the structure of GFP. In the row starting with StructureSection load change 1stp to GFP's pdb code. Hint - if you're not sure which pdb code to use, look at the GFP test page. Change the caption as well from caption='Caption for this structure’ to caption='GFP (PDB entry 1ema)'.

use the 'show preview' button to check what changed in your page.


Now that we have our 3D model on the page, let’s create a green scene link that shows 1ema as it looks in the the left part of the 2D image on the GFP Sample page where we got our text. (go back to that page to see what the picture looks like User:Shai Biran/GFP test page) To create a green scene link, we will need to use the 'Proteopedia Scene Authoring Tools'.

  • After clicking edit this page, scroll down to the bold text that says “Scene authoring tools [show]” next to a colorful molecule. Click on “show” to expand the Scene Authoring Tools.

Image:SAT.png

  • Click on the tab “load molecule” in the Scene Authoring Tools.
  • Load the PDB file 1ema by entering the PDB code “1ema” in the input box next to the words “By PDB code:” and then pressing the adjacent button marked “load”
  • Now we have 1ema loaded into the Scene Authoring Tools’ Jmol applet. The idea behind the Scene Authoring Tools (SAT) is to create the exact scene that you would like to have load when your green link is clicked. This is generally done by first loading a PDB file into the SAT’s applet, then using the “selections”, “representations”, “colors”, and “labels” tabs to manipulate the 3D model into the desired state, finally saving the green scene link using the “save scene” tab.
  • Our structure is currently displayed in cartoon representation. The first step in recreating the picture in the Molecule of the Month is to display the molecule in backbone representation.
  • Click on the “selections” tab.

Image:Selections.png

  • In the “all or nothing and halos” section, click on the “select all” button.

Image:GFP_Halos_off.png

  • Nothing changed because “selection halos” were not on. Turn them on by marking the checkbox next to the word “selection halos”.

Image:GFP_Halos_On.png

Selection halos serve to show you what is currently selected. They will not be displayed when the green scene link you eventually create is clicked.

Now that we have everything selected, click on the “representations” tab of the SAT. Image:Representations.png

Mark the checkbox next to “backbone” in the section titled “set selection representation”. Click on the “set representation” button. Notice the representation of the 3D model has changed from cartoon to backbone. To help see this better, turn off the selection halos by unmarking the checkbox next to “selection halos”.

Image:Backbones.png

Now we want to select the segment of the protein that runs through the barrel and color it green. To make a selection, click on the “selections” tab. We will select the segment that runs through the barrel by its residue numbers. To do this we need to know the first and the last residue numbers that make up this segment. Notice that when you hover with your mouse over an atom in the Jmol applet, information about that atom is displayed, including the residue that atom is part of, and the residue number. Use this “hover” feature to find the residue numbers for the beginning and the end of the segment we are interested in.

Image:Hover_over_atom.png

Enter the starting and ending residue numbers, separated by a hyphen, into the input box under the text “limit to residue numbers:”. Before making our new selection, let’s turn on selection halos so we see the change in the selection take place. Mark the checkbox next to “selection halos”. Notice that everything is selected. Now go ahead and make the new selection by clicking “replace selection”. This will replace the old selection (everything) with our new selection (limited to a stretch of residues).

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References

Proteopedia Page Contributors and Editors (what is this?)

Shai Biran

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