From Protist-Prokaryote Symbiosis Database
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Lists of pages

Project pages

EntitySchema pages

MediaWiki pages


  • ppsdb-utils -- Python scripts for various maintenance task (private GitHub repo)
  • ppsdb-globi-export -- Export of core interaction information from PPSDB for indexing by GloBI

To do lists

NCBI taxon IDs requiring attention from NCBI Taxonomy team

Items that need some attention

  • Item:Q448 - should be split to two entries
  • Item:Q994 - check that all listed host species included

Taxonomic groups that need updates

  • Historical literature on "greek letter" ciliate symbionts
  • Forams!

Project maintenance to-dos

In progress:

  • Add P42 statements "Method used to identify subject"
  • Add environmental origin statements: P36, P38, P40
  • Check for statements that should be moved from P19 to P41 "interacts experimentally with"
  • Interaction statements: If different aspects of the same symbiosis are described in different publications (e.g. phylogenetic identity vs. interaction type), encode these as separate statements with different qualifier values and references, instead of merging them into one statement where it is not clear which reference is cited in support of which claim. Example: Item:Q501. Use qualifier P45 "method used to determine interaction type".

Chores handled by ppsdb-utils:

  • Process backlog of new references
  • Find references that have only DOIs and link them to reference items, or create new reference items for them by Wikidata lookup
  • Add formatted citations to reference items; get these from Crossref using the DOI:

Other chores:

  • Add parent taxa for all taxon items
  • Ensure that all items have a class
  • Find (prokaryote) taxon items that have NCBI taxon ID and a LPSN record, but which are not in Wikidata, and export them to Wikidata


  • Better documentation of the data modeling, example workflow for adding a new entry based on information in a publication
  • Copyright statement, privacy policy

NB: The taxonomy version (e.g. PR2 v5.0.0 for eukaryotes) is tagged by linking to a reference item for that particular taxonomy version to the 'parent taxon' statement in a 'stated in' reference. Ideally we should be able to specify which taxonomy version we want to use, if branches get moved around in the future...


  • Sane way to model placeholder taxa and non-specific taxon statements? E.g. general statements like "all members of this family are associated with methanogens", without creating items for each individual?
  • Modeling interactions: RO is insufficient?
  • How to model "attached to" vs. "adjacent to" relations? Perhaps add subproperties of as values of a "topological relationship to subject body part" qualifier
  • Add statements about metabolism ("phototroph", "nitrogen fixer") to symbiont items?
  • Dummy taxon for "microbiome" to enable us to add references for microbiome studies?
  • Which environmental material is most appropriate for protists that are symbionts located in digestive tract environment?