This page describes the PSI-MI XML file format, also known as MIF. The PSI MI format is a data exchange format for molecular interactions.
The file format is described at the HUPO Proteomics Standards Initiative site, see the specification. The current version is 2.5.
Released December 5, 2005; last maintenance update June 1, 2006, to version 2.5.3.
The newer OBO file type appears to be .obo; previously DAG file types of .dag and .def were used. <Uncertain.>