protein modification process (GO:0036211)

The covalent alteration of one or more amino acids occurring in proteins, peptides and nascent polypeptides (co-translational post-translational modifications). Includes the modification of charged tRNAs that are destined to occur in a protein (pre-translation modification).

Specific

cellular protein modification process (GO:0006464) protein modification process in other organism (GO:0036210)

General

macromolecule modification (GO:0043412) protein metabolic process (GO:0019538)

References

gene ontology: GO:0036211