Molecular Interactions

A structured controlled vocabulary for the annotation of experiments concerned with protein-protein interactions. Developed by the HUPO Proteomics Standards Initiative.

Ontology information

Ontology ID: mi
Version: 2020-04-13
Number of terms: 1566
Last loaded: Thu Jun 02 21:20:26 GMT 2022


12:02:2020 14:29




OBO-Edit 2.3.1


short labels are reported as PSI-MI-short synonyms that are created when a term is more than 20 characteres long.

The PSI MI schema defines short labels for controlled vocabulary terms

The maintenance of this file is ensured by Pablo Porras Millán and Sandra Orchard

Each of the top level terms in this file is the root term of an independent controlled vocabulary

The last accession number used in this file is stored in a separate file,

publisher: This file is published by the PSI MI working group see

coverage: This file collect controlled vocabularies describing different aspects of molecular interactions.

mapping an element of the PSI Molecular Interaction XML schema.

psi-mi.lastac. It MUST be updated when this file is updated.


formalized in a mapping file available at

The correct use of these vocabularies in the PSI Molecular Interaction XML schema is

CVversion: 2.5.5