| Feature | MOD_RES |
| Definition | Posttranslational modification of a residue |
| Optional Qualifiers | /NOTE="free text" |
| Comment | The chemical nature of the modified residue is given in the NOTE qualifier, indicating at least the name of the post-translationally modified amino acid. If the modified amino acid is listed in Table 4 of this Annex, the abbreviation may be used in place of the the full name. Examples of values for the "NOTE" qualifier: 'N-acetylalanine'; '3-Hyp' and 'MeLys' or 'N-6-methyllysine' |