obsolete nonprotein amino acid metabolic process
Go to external page http://purl.obolibrary.org/obo/GO_0019794
GO:0006520
OBSOLETE. The chemical reactions and pathways involving any amino acid not found, or rarely found, in peptide linkage in proteins. [ GOC:jl https://www.worldcat.org/search?q=bn%3A0198506732 ]
Synonyms: nonprotein amino acid metabolism nonprotein amino acid metabolic process
Term information
This term was made obsolete because it was a grouping term that was poorly defined and did not provide a particularly meaningful grouping, since even for those amino acids commonly found in proteins, not all molecules necessarily end up incorporated into proteins. The term also violated the principle of positivity.