R package for the analysis of post-translational modifications, with particular emphasis on the sulfoxidation (oxidation) of methionine residues.

Extensive and detailed documentation related to this package can be found at

Citing ptm

Aledo, JC. ptm: an R package for the study of methionine sulfoxidation and other posttranslational modifications. Bioinformatics, Volume 37, Issue 21, 1 November 2021, Pages 3979–3980,


We are always interested in improving and adding additional functionality to ptm. If you have ideas, suggestions or code that your would like to distribute as part of this package, please contact us (see below).


Your are welcome to: