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. Author manuscript; available in PMC: 2019 Mar 2.
Published in final edited form as: J Proteome Res. 2018 Feb 14;17(3):1321–1325. doi: 10.1021/acs.jproteome.7b00851

Table 1.

Currently Supported Modification Databases

database name CTDP
recommendation
URL
Unimod default http://www.unimod.org/modifications_list.php
UniProt recommended https://www.uniprot.org/docs/ptmlist
RESID recommended http://pir.georgetown.edu/resid/resid.shtml
PSI-MOD recommended http://www.ebi.ac.uk/ols/ontologies/mod
UniCarbKB acceptable http://www.unicarbkb.org/
PRO Ontology/NCBI acceptable http://pir.georgetown.edu/pro/