3 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
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15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
16 * PURPOSE. See the GNU General Public License for more details.
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20 * The Jalview Authors are detailed in the 'AUTHORS' file.
23 <title>The Chimera PDB Viewer</title>
27 <strong>The Chimera and ChimeraX Viewers</strong>
30 Since Jalview 2.8.2, <a href="http://www.cgl.ucsf.edu/chimera/">Chimera</a>
31 (http://www.cgl.ucsf.edu/chimera/) can be used for viewing
32 structures opened via the <a href="structurechooser.html"><strong>"View
33 Structure Data.."</strong> dialog</a>. In Jalview 2.11.2, support
34 was also added for ChimeraX, and <a href="pymol.html">Pymol</a>.
37 You can set a default choice of Jmol or Chimera structure viewer in
38 <a href="preferences.html#structure"> Preferences</a>. You can also
39 optionally specify the path to the Chimera program here (if it
40 differs from the standard paths searched by Jalview).<br /> <strong>Please
41 make sure your version of Chimera is up to date. Jalview requires
42 at least Chimera version 1.11.1</strong>
45 If you save your Jalview session as a project file, the state of any
46 open Chimera windows will also be saved, and can be reopened by
47 loading the project file on any machine with Chimera installed. <em>Since
50 <a name="align"><strong>Superposing structures based on
51 their aligned sequences</strong></a><br> If several structures are
52 available on the alignment, you may add additional structures to an
53 existing Chimera view by selecting their entry in the appropriate
54 pop-up menu. Jalview will ask you if you wish to add the structure
55 to the existing alignment, and if you do, it will import and
56 superimpose the new PDB file using the corresponding positions from
57 the alignment. If the alignment is subsequently edited, you can use
58 the <a href="#sAlign"><em>Chimera→Align</em></a> menu option
59 from the menu bar of the structure view window to superpose the
60 structures using the updated alignment.<br>
63 <strong>Chimera Controls</strong><br> The structure is by
64 default rendered as a ribbon diagram. Moving the mouse over the
65 structure brings up tooltips giving the residue name, PDB residue
66 number and chain code ([RES]Num:Chain). Moving the mouse over an
67 associated residue in an alignment window highlights the associated
68 atoms in the displayed structures. When residues are selected in the
69 Chimera window, they are highlighted on the alignment.
70 <p>For comprehensive details of Chimera's commands, refer to the
73 <strong>Selecting residues in Jalview from Chimera</strong><br />
74 When a selection is highlighted in a Jalview window, use the
75 <em>Select→Select Highlighted Region</em> or press <em>B</em>
76 to add the mapped positions to the alignment window's column
77 selection.<br /> <em>Hint: Use your machine's 'switch
78 application' key combination (Alt-Tab on Windows and Linux,
79 Cmd-Tab on OSX) to quickly switch between UCSF Chimera and Jalview
80 before pressing 'B' to select highlighted regions.</em>
83 Basic screen operations (see <a
84 href="http://www.cgl.ucsf.edu/chimera/current/docs/UsersGuide/mouse.html">Chimera
86 http://www.cgl.ucsf.edu/chimera/current/docs/UsersGuide/mouse.html
90 <td><strong>Action</strong></td>
91 <td><strong>Windows</strong></td>
92 <td><strong>Unix</strong></td>
93 <td><strong>Mac/OSX</strong></td>
97 <td>Left Click and Drag</td>
98 <td>Left Click and Drag</td>
99 <td>Left Click and Drag</td>
103 <td>Right Click<br> drag mouse up or down
105 <td>Right Click<br>drag mouse up or down
107 <td>cmd or Right + Click and drag mouse up or down, <br>or
108 use mouse scroll button
113 <td>Middle Button + Drag</td>
114 <td>Middle Button and drag</td>
115 <td>alt + Click<br> and drag
119 <td>Select Residues</td>
120 <td>Ctrl + Click (and drag to select a region)</td>
121 <td>Ctrl + Click (and drag)</td>
122 <td>Ctrl + Click (and drag)</td>
127 <strong>Jalview Controls</strong>
128 <p>The Jalview Chimera View window has up to five menus:</p>
133 <li><strong>View Mapping<br>
134 </strong><em> Opens a text window showing the alignment between the
135 residues corresponding to alpha-carbon atoms in the PDB
136 structure and the residues in the associated sequence.</em></li>
138 <li><strong>View</strong>
140 <li><strong>Show Chains<br>
141 </strong><em>Select which of the PDB file's chains (if more than
142 one) are to be displayed.</em></li>
143 <li><strong>Colour by ..<br></strong><em>Submenu
144 allowing specific alignment views to be selected for
145 colouring associated chains in the structure display. This
146 menu contains all the alignment views associated with the
147 structure view, with those used to colour the view indicated
148 by ticks. Addditionally, it contains the following menu
151 <li><strong>Select many views<br></strong><em>When
152 this option is enabled, selecting an alignment view adds
153 it to the set used to colour the structures. Use this
154 when colouring structures related to a number of
155 alignments involving different domains or chains which
156 are shown in the same structure view.</em></li>
157 <li><strong>Select all views<br></strong><em>This
158 is only enabled when </em><strong>Select many views</strong><em>
159 is also enabled, and will add all associated views to
160 the set used to colour the structure display.</em></li>
161 <li><strong>Invert selection<br></strong><em>This
162 is only enabled when </em><strong>Select many views</strong><em>
163 is also enabled, and will replace the current set of
164 views with any remaining views not currently used to
165 colour the structure display.</em></li>
168 <li><strong>Colours<br>
171 <li><strong>By Sequence<br>
172 </strong><em> Colours each residue in the structure with the colour
173 of its corresponding residue in the associated sequence as
174 rendered in the associated alignment views, including any
175 UniProt sequence features or region colourings.<br />Pick
176 which of the associated alignment views are used to colour
177 the structures using the <strong>View→Colour
178 by ..</strong> sub menu.
179 </em><br> Residues which only exist in the PDB structure are
180 coloured white if they are insertions (relative to the
181 associated sequence in the alignment) and grey if they are N
182 or C terminal flanks outside the region mapped to the
183 alignment window's sequence.</em></li>
184 <li><strong>By Chain<br>
185 </strong><em>Uses the Chimera 'rainbow chain' command to apply a
186 different colour to each chain.</em></li>
187 <li><strong>Charge & Cysteine<br>
188 </strong><em> Highlights cysteines in yellow, anionic (Aspartic Acid
189 or Glutamic Acid) residues in red, and cationic (Lysine or
190 Arginine) residues in blue.</em></li>
191 <li><strong>Colour with Chimera<br></strong><em>Defers
192 any colouring operations to Chimera. Select this if you want
193 to use the Chimera scripting interface or menu to modify the
194 view directly.</em></li>
195 <li><strong>Standard and User Defined Jalview
197 </strong><em>The remaining entries apply the colourschemes available
198 from the standard and user defined <a
199 href="../colourSchemes/index.html">amino acid
203 <li><strong>Chimera<br>
204 </strong><em>This pulldown menu is only displayed if there are multiple
205 structures shown in the Chimera window, and Jalview can also
206 locate at least two of the structures in the currently
207 associated alignment view.</em>
209 <li><strong><a name="sAlign">Align</a> <br> </strong><em>
210 When selected, the associated alignment will be used to
211 superimpose all the structures in the view onto the first
212 structure in the alignment. The regions used to calculate
213 the superposition will be highlighted using the 'Cartoon'
214 rendering style, and the remaining data shown as a chain
218 <li><a name="annotxfer"><strong>Write Jalview
219 features</strong></a><br /> <em>Selecting this option will create
220 new residue attributes for any features currently visible in
221 the associated alignment views, allowing those positions to
222 be selected and analysed with via Chimera's 'Render by
223 Attribute' tool (found in the Tools submenu called Structure
224 Analysis).<br /> <br />If you use this option, please
225 remember to select the <em>Refresh Menus</em> option in
226 Chimera's Render by Attribute dialog box in order to see the
227 attributes derived from Jalview sequence features.
229 <li><strong>Fetch Chimera Attributes</strong><br /> <em>This
230 submenu lists available Chimera residue attributes that can
231 be imported as Jalview features on associated sequences.<br />This
232 is particularly useful for transferring quantitative
233 positional annotation. For example, structure similarity for
234 an alignment can be visualised by transferring the local
235 RMSD attributes generated by Chimera's Match->Align tool
236 onto aligned sequences and displayed with a <a
237 href="featureschemes.html">Graduated feature colour
243 <li><strong>Chimera Help<br>
244 </strong><em>Access the Chimera Help documentation in a new browser
249 <strong>Chimera and Windows Firewall</strong>
251 Jalview and Chimera communicate using Chimera's
253 href="http://www.cgl.ucsf.edu/chimera/current/docs/ContributedSoftware/restserver/restserver.html">REST
255 (http://www.cgl.ucsf.edu/chimera/current/docs/ContributedSoftware/restserver/restserver.html).
256 <br> Technically this requires both Chimera and Jalview to open
257 ports on the local network, and this may be blocked by Windows
258 Firewall with a warning message such as
259 <br /> "Windows Firewall has blocked some features of this program"
260 (where the program may be jp2launcher.exe for Jalview Webstart, or
261 java.exe or javaw.exe for the InstallAnywhere version).
262 <br /> To allow Jalview and Chimera to interact, you may need to add
263 permission for the program to communicate over the network. This can
264 be done from the warning dialogue, or in Control Panel, Firewall