| id | GO:0043687 Detailed information
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| name | post-translational protein modification
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| namespace | biological_process
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| def | "The process of covalently altering one or more amino acids in a protein after the protein has been completely translated and released from the ribosome." [GOC:jsg]
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| comment | This term should only be used to annotate a protein modification process that occurs after the protein has been released from the ribosome, and is therefore strictly post-translational. Modification of a free protein (one not attached to a ribosome) and modification of a C-terminal residue are post-translational processes. Some protein modifications occur while the protein is still in the ribosome but before translation has been completed; these modification processes are considered co-translational and should not be annotated using this term.
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| subset | gosubset_prok
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| is_a | GO:0006464 ! cellular protein modification process
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