Monthly Archives: April 2013

Resource: Antibodypedia bulk download file and STRING payload

Antibodypedia is a very useful resource for finding commercially available antibodies against human proteins developed by Antibodypedia AB and Nature Publishing Group.

The resource is made available under the Creative Commons Attribution-NonCommercial 3.0 license, which allows for reuse and redistribution of the data for non-commercial purposes. However, the data are purely available for browsing through a web interface, which greatly limits systems biology uses of the resource. I thus wrote a robot to scrape all information from the web resource and convert it into a convenient tab-delimited file, which I have made available for download under the same license. This dataset covers a total of 579,038 antibodies against 16,827 human proteins.

To be able to use the dataset in conjunction with STRING and related resources, I next mapped the proteins to STRING protein identifiers. I was able to map 92% of all proteins in Antibodypedia. Having done this, I created the necessary files for the STRING payload mechanism to be able to show the information from Antibodypedia directly within STRING.

The end result looks like this when searching for the WNT7A protein:

Antibodypedia STRING network

The halos around the proteins encode the type and number of antibodies available. Red rings imply that at least one monoclonal antibody exists whereas gray rings imply that only polyclonal antibodies exist. The darker the ring (be it red or gray), the more different antibodies are available.

They STRING payload mechanism also extends the popups with additional information, here shown for LRP6:

Antibodypedia STRING popup

The popup shows the total number of antibodies available and how many of them are monoclonal. It also provides a direct linkout to the relevant protein page on Antibodypedia.

Please, feel free to use this Antibodypedia-STRING mashup.