Welcome to PSORTdb 3.0


PSORTdb (part of the PSORT family) is a database of protein subcellular localizations for bacteria and archaea that contains both information determined through laboratory experimentation (ePSORTdb dataset) and computational predictions (cPSORTdb dataset).

This latest version of PSORTdb contains improved analyses for microbes with a wider diversity of cell envelope structures. For example, see a schematic of some different kinds of bacterial cell envelopes here.

Precomputed Genomes/Proteomes (cPSORTdb)

Already know which organism you want precomputed computational predictions for? Start typing its species or strain below.

Or select from a list of selected model organisms/genomes:

Click here to browse the list of precomputed genomes.

Or use the search function to search the database.

Note: Site is optimized for Google Chrome and Safari. If you have any issues with viewing results, please try using one of these browsers.

Experimentally derived localizations (ePSORTdb)

Click here to browse a list of proteins of known subcellular localization.

Or use the search function to search the database.


If you use PSORTdb in your research, we would greatly appreciate if you cited the following publication:

Peabody MA, Laird MR, Vlasschaert C, Lo R, Brinkman FS. (2016) PSORTdb: expanding the bacteria and archaea protein subcellular localization database to better reflect diversity in cell envelope structures. Nucleic Acids Research. 44(D1):D663-8.

Yu, N.Y., Laird, M.R., Spencer, C, and Brinkman, F.S.L. (2011) PSORTdb--an expanded, auto-updated, user-friendly protein subcellular localization database for Bacteria and Archaea. Nucleic Acids Research. 39:D241-244 (Database issue).

Rey, S., M. Acab, J.L. Gardy, M.R. Laird, K. deFays, C. Lambert, and F.S.L. Brinkman (2005). PSORTdb: A Database of Subcellular Localizations for Bacteria. Nucleic Acids Research. 33:D164-168 (Database issue).


Recent Updates

Scheduled downtime on October 23, 2017 (12pm PST)
October 23, 2017 at 12:08 PM
Scheduled downtime on November 18, 2016 between 10:00 and 12:00 PST
November 16, 2016 at 03:44 PM
Planned power outage for December 8 between 07:00 and 12:00 PST.
December 07, 2015 at 12:00 AM
PSORTdb 3.0 released
September 30, 2015 at 03:32 PM
Updated 2780 organisms
September 18, 2015 at 11:01 AM
More updates...

PSORT Links

Looking for the old PSORTdb website? You can find it archived here.

You can also find out more about PSORTb and its related family of programs on the PSORT website.

Proteins Wanted!

We're always looking for new proteins to add to our database!

If you think you've got a good candidate, please submit it to us!

Mailing List

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