This repository contains the Human Proteome Organization (HUPO) Proteomics Standards Initiative (PSI) Mass Modifications Ontology (PSI-MOD). The content here was moved from the old SourceForge CVS site (https://sourceforge.net/projects/psidev/). It is the source repository of the PSI-MOD obo file, main deliverable PSI-MOD, which is reactivated in this repository.
The joint activies PSI-MOD working group is reactivated after a long stand-by period. Description on the project can be found here.
If you would like to comment on the PSI-MOD document, please submit a new issue through github.
The link (http://psidev.cvs.sourceforge.net/viewvc/*checkout*/psidev/psi/mod/data/psi-mod.obo) found in various files is supposed to be safely substituted with the link for the corresponding file (https://raw.githubusercontent.com/HUPO-PSI/psi-mod-CV/master/PSI-MOD.obo)