[X-plor] PDBportfolio - slideshows of salient images for all your favourite PDB entries

Gerard DVD Kleywegt via x-plor%40net.bio.net (by gerard from xray.bmc.uu.se)
Thu Mar 10 11:55:02 EST 2011


Hi all,

As part of its recent winter update, the Protein Data Bank in Europe (PDBe; 
http://pdbe.org) released a new widget, called PDBportfolio, that we hope will 
find widespread use. It displays a slideshow of images that convey important 
information about the entry (or entries). Every image comes with a legend that 
explains what is shown and one or more links that provide further information. 
If you have ever wanted to show off your favourite or own structure(s) on your 
website, PDBportfolio provides an easy-to-use alternative to a static image. 
Examples of uses include:

- the PDBe summary pages for all PDB entries, for instance: 
http://pdbe.org/1cbs

- the summary pages of the Uppsala Electron Density Server, for example: 
http://eds.bmc.uu.se/cgi-bin/eds/uusfs?pdbCode=1fcc

- on your own webpages, for example: 
http://xray.bmc.uu.se/gerard/structures_pdbportfolio.html

The images/legends cover a number of categories of information, including:

- Quaternary structure - the largest assembly identified by the authors or 
PISA is shown

- Deposited model - a cartoon and a surface representation are shown 
(separately). The cartoon is coloured by chain and shown with non-polymeric 
entities as space-filling (CPK) models. The surface is coloured by atom 
properties using some simple rules (a la PyMol). For protein-DNA/RNA 
complexes, only the protein surface is shown

- Domains - domains as defined by SCOP, CATH and Pfam are highlighted on the 
structure in separate images. A unique colour is used for each type of domain 
and each domain is rendered as a cartoon of that colour; the domain boundaries 
are further indicated by a semi-transparent surface of the same colour around 
the domain. Different surface styles are used to help in distinguishing 
multiple occurrences of the same domain

- Compounds - small molecules are shown with their binding environment. 
Compounds that are most likely experimental additives (such as glycerol) are 
ignored. Of the remaining ligands, at most three different ones are shown

- Experiment - for X-ray entries, a B-factor putty is shown and red surface 
patches indicate where crystal contacts occur. For NMR entries, the entire 
ensemble of models is shown. For EM entries, the map is shown (and sometimes a 
fitted model)

PDBportfolio can be used to display information about a single or multiple PDB 
entries. PDBprints can also be shown to provide additional information about 
the entry or entries (see http://pdbe.org/pdbprints for more information).

The PDBportfolio user-interface contains a number of elements, including:

- buttons that control the speed and allow you to start/stop the slideshow or 
go to the next or previous image

- an entry/image-selection pull-down (if you select an entry or a category of 
images, only the images belonging to it will be shown)

- action icons (below the images) - these allow you to get more information 
about the information category of the current image, download an archive with 
all the images plus the PyMol scripts used to generate them, and see a page 
with all the images and legends in one table

- the legend for most images contains links to pages with further information

The information used to generate the images (e.g., mapping of Pfam or CATH 
domains) is taken from the PDBe search database and will thus be kept 
up-to-date "automatically" (as far as you as a user are concerned - see 
http://pdbe.org/sifts for more information about what goes on under the hood).

To the right of the control buttons you will find a help icon - this will take 
you to the following page:

                http://pdbe.org/pdbportfolio

This page also contains details on how to incorporate the widget in your own 
webpages. It's so simple that even yours truly can do it...

We welcome your comments, bug reports and feature requests on this widget. 
Please use the feedback button at the top of any PDBe web page.

--Gerard

---
Gerard J. Kleywegt, PDBe, EMBL-EBI, Hinxton, UK
gerard from ebi.ac.uk ..................... pdbe.org
Secretary: Pauline Haslam  pdbe_admin from ebi.ac.uk



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