X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=help%2Fhtml%2Ffeatures%2Fviewingpdbs.html;h=b1ad4bae86c77cc534a3285c370a2a3e864cb54e;hb=4dd96dd41cb37178a6dc0298ce08c8bfcdfab715;hp=353ca09aac7d5ad2473333b4e23c43edb5817740;hpb=83b541e967d19e6aeb5b02f476a77399f5f79d22;p=jalview.git diff --git a/help/html/features/viewingpdbs.html b/help/html/features/viewingpdbs.html index 353ca09..b1ad4ba 100755 --- a/help/html/features/viewingpdbs.html +++ b/help/html/features/viewingpdbs.html @@ -1,41 +1,190 @@ - -
Viewing PDB Structures
-Jalview has a simple 3D structure viewer which - can visualize polypeptide backbone structures associated with a sequence in - a particular alignment view. It is accessed via the "Sequence→View - PDB entry:" entry from the sequence's pop-up menu.
-Since Jalview 2.3, Jmol has been integrated into the application and will also - run in the applet in all latest web browsers. For more help using Jmol, see - http://jmol.sourceforge.net/docs/JmolUserGuide/ -
-To associate PDB files with a sequence, right click on a sequence ID and select - "Associate Structure with Sequence", and one of the submenus:
-Note: You can retrieve sequences from the PDB using the Sequence Fetcher. Any sequences retrieved with this - service are automatically associated with their source database entry. For PDB - sequences, simply select PDB as the database and enter your known PDB id (appended - with ':' and a chain code, if desired).
-Sequences which have PDB File associations are annotated with sequence features - from the group 'PDBFile' giving the corresponding PDB Residue Number for each - mapped residue in the seuqence. The display of these features is controlled through - the "View→Sequence Features" menu item and the - Feature Settings dialog box.
-See the PDB Viewer help page for more information.
- - + + + ++ Discovering and Viewing PDB Structures +
+ Jalview can be used to explore the 3D structures of sequences in an + alignment by following the steps below: +
+ Structure Viewers in the Jalview Desktop
The
+ Jmol viewer has been included since Jalview
+ 2.3. Jalview 2.8.2 included support for Chimera,
+ provided it is installed and can be launched by Jalview. The default
+ viewer can be configured in the Structure
+ tab in the Tools→Preferences dialog box.
+
+
+ Structure data imported into Jalview can also be processed to + display secondary structure and temperature factor annotation. See + the Annotation from Structure page + for more information. +
+
+
Controlling where the new structures
+ will be shown
+
The Structure Chooser offers several options
+ for viewing a structure.
New View will open a new
+ structure viewer for the selected structures, but if there are views
+ already open, you can select which one to use, and press the Add
+ button. Jalview can automatically superimpose new structures based
+ on the linked alignments - but if this is not desirable, simple
+ un-tick the Superpose Structures checkbox.
+
+
+ Superposing structures
Jalview superposes structures using
+ the visible portions of any associated sequence alignments. A
+ message in the structure viewer's status bar will be shown if not
+ enough aligned columns were available to perform a superposition.
+
+ See the Jmol + and Chimera help pages for + more information about their capabilities.
+ + +
+ Retrieving sequences from the PDB
You can
+ retrieve sequences from the PDB using the Sequence Fetcher. The sequences
+ retrieved with this service are derived directly from the PDB 3D
+ structure data, which can be viewed in the same way above. Secondary
+ structure and temperature factor annotation can also be added.
+
+
Jalview will also read PDB files directly - either in PDB
+ format, or mmCIF. Simply load in the file
+ as you would an alignment file. The sequences of any protein or
+ nucleotide chains will be extracted from the file and viewed in the
+ alignment window.
+
+ Associating a large number of PDB files to
+ sequences in an alignment
It is often the case when working
+ with structure alignments that you will have a directory of PDB
+ files, and an alignment involving one or more of the structures. If
+ you drag a number of PDB files onto an alignment in the Jalview
+ desktop, Jalview will give you the option of associating PDB files
+ with sequences that have the same filename. This means, for example,
+ you can automatically associate PDB files with names like '1gaq.pdb'
+ with sequences that have an ID like '1gaq'.
Note:
+ This feature was added in Jalview 2.7
+
+ Note for Jalview applet users:
Due to the applet
+ security constraints, PDB Files can currently only be imported by
+ cut and paste of the PDB file text into the text box opened by the
+ 'From File' entry of the structure menu.
+
+
+ Viewing the PDB Residue Numbering
+ Sequences which have PDB entry or PDB file associations are
+ annotated with sequence features from a group named with the
+ associated PDB accession number or file name. Each feature gives the
+ corresponding PDB Residue Number for each mapped residue in the
+ sequence. The display of these features is controlled through the "View→Sequence
+ Features" menu item and the Feature
+ Settings dialog box.
+
+ Switching between mmCIF and PDB format for
+ downloading files from the PDB
Jalview now employs the mmCIF format for importing 3D structure data
+ from flat file and EMBL-PDBe web-service, as recommended by the
+ wwwPDB. If you prefer (for any reason) to download data as PDB files
+ instead, then first close Jalview, and add the following line to
+ your .jalview_properties file:
+ PDB_DOWNLOAD_FORMAT=PDB
+
When this setting is configured, Jalview will only request
+ PDB format files from EMBL-EBI's PDBe.
mmCIF format
+ file support was added in Jalview 2.10.
+
+ Outstanding problem with cut'n'pasted
+ files in Jalview 2.6 and Jalview 2.7
Structures imported
+ via the cut'n'paste dialog box will not be correctly highlighted
+ or coloured when they are displayed in structure views, especially
+ if they contain more than one PDB structure. See the bug report at
+ http://issues.jalview.org/browse/JAL-623 for news on this problem.
+